Experimentalphysik / Nanowissenschaften auf ultrakurzen Zeitskalen

2023

Shuo Dong, Samuel Beaulieu, Malte Selig, Philipp Rosenzweig, Dominik Christiansen, Tommaso Pincelli, Maciej Dendzik, Jonas D. Ziegler, Julian Maklar, R. Patrick Xian, Alexander Neef, Avaise Mohammed, Armin Schulz, Mona Stadler, Michael Jetter, Peter Michler, Takashi Taniguchi, Kenji Watanabe, Hidenori Takagi, Ulrich Starke, Alexey Chernikov, Martin Wolf, Hiro Nakamura, Andreas Knorr, Laurenz Rettig, and Ralph Ernstorfer:
Observation of ultrafast interfacial Meitner-Auger energy transfer in a Van der Waals heterostructure.
Nature Communications 14, 5057 (2023)

A. Neef, M. Rossi, M. Wolf, R. Ernstorfer, and H. Seiler:
On the Role of Nuclear Motion in Singlet Exciton Fission: The Case of Single‐Crystal Pentacene.
physica status solidi (a), 2300304 (2023).

Alexander Neef, Samuel Beaulieu, Sebastian Hammer, Shuo Dong, Julian Maklar, Tommaso Pincelli, R. Patrick Xian, Martin Wolf, Laurenz Rettig, Jens Pflaum & Ralph Ernstorfer
Orbital-resolved observation of singlet fission
https://www.nature.com/articles/s41586-023-05814-1

Hélène Seiler, Daniela Zahn, Victoria C. A. Taylor, Maryna I. Bodnarchnuk, Yoav W. Windsor, Maxsym V. Kovalenko, and Ralph Ernstorfer:
Direct observation of ultrafast lattice distortions during exciton-polaron formation in lead halide perovskite nanocrystals.
ACS Nano 17, 1979 (2023)

R Patrick Xian, Vincent Stimper, Marios Zacharias, Maciej Dendzik, Shuo Dong, Samuel Beaulieu, Bernhard Schölkopf, Martin Wolf, Laurenz Rettig, Christian Carbogno, Stefan Bauer, and Ralph Ernstorfer:
A machine learning route between band mapping and band structure.
Nature Computational Science 3, 101 (2023).

Tommaso Pincelli, Thomas Vasileiadis, Shuo Dong, Samuel Beaulieu, Maciej Dendzik, Daniela Zahn, Sang‐Eun Lee, Hélène Seiler, Yinpeng Qi, R Patrick Xian, Julian Maklar, Emerson Coy, Niclas S Mueller, Yu Okamura, Stephanie Reich, Martin Wolf, Laurenz Rettig, and Ralph Ernstorfer:
Observation of Multi‐Directional Energy Transfer in a Hybrid Plasmonic‐Excitonic Nanostructure.
Advanced Materials 2209100 (2023)

 

2022

R. Patrick Xian, Vincent Stimper, Marios Zacharias, Maciej Dendzik, Shuo Dong, Samuel Beaulieu, Bernhard Schölkopf, Martin Wolf, Laurenz Rettig, Christian Carbogno, Stefan Bauer & Ralph Ernstorfer
A machine learning route between band mapping and band structure
https://www.nature.com/articles/s43588-022-00382-2

Tommaso Pincelli, Thomas Vasileiadis, Shuo Dong, Samuel Beaulieu, Maciej Dendzik, Daniela Zahn, Sang-Eun Lee, Hélène Seiler, Yingpeng Qi, R. Patrick Xian, Julian Maklar, Emerson Coy, Niclas S. Mueller, Yu Okamura, Stephanie Reich, Martin Wolf, Laurenz Rettig, Ralph Ernstorfer
Observation of Multi-Directional Energy Transfer in a Hybrid Plasmonic–Excitonic Nanostructure
https://doi.org/10.1002/adma.202209100

Hongyun Zhang, Tommaso Pincelli, Chris Jozwiak, Takeshi Kondo, Ralph Ernstorfer, Takafumi Sato, and Shuyun Zhou:
Review: Angle-resolved photoemission spectroscopy.
Nature Reviews Methods Primers 2, 54 (2022)
open access version on arXiv

Yingpeng Qi, Mengxue Guan, Daniela Zahn, Thomas Vasileiadis, Hélène Seiler, Yoav William Windsor, Hui Zhao, Sheng Meng, and Ralph Ernstorfer:
Traversing Double-Well Potential Energy Surfaces: Photoinduced Concurrent Intralayer and Interlayer Structural Transitions in XTe2 (X = Mo, W).
ACS Nano 16, 11124 (2022)

J. Maklar, R. Stühler, M. Dendzik, T. Pincelli, S. Dong, S. Beaulieu, A. Neef, G. Li, M. Wolf, R. Ernstorfer, R. Claessen, and L. Rettig:
Ultrafast momentum-resolved hot electron dynamics in the two-dimensional topological insulator bismuthene.
Nano Lett. 22, 5420 (2022).
arXiv:2108.09218

J. Maklar, S. Dong, J. Sarkar, Y.A. Gerasimenko, T. Pincelli, S. Beaulieu, P.S. Kirchmann, J.A. Sobota, S.-L. Yang, D. Leuenberger, R.G. Moore, Z.-X. Shen, M. Wolf, D. Mihailovic, R. Ernstorfer, and L. Rettig:
[preprint] Coherent Light Control of a Metastable Hidden Phase.
arXiv:2206.03788

Alexander Neef, Samuel Beaulieu, Sebastian Hammer, Shuo Dong, Julian Maklar, Tommaso Pincelli, R. Patrick Xian, Martin Wolf, Laurenz Rettig, Jens Pflaum, and Ralph Ernstorfer:
[preprint] Orbital-resolved Observation of Singlet Fission.
arXiv:2204.06824

Geoffroy Kremer, Julian Maklar, Laurent Nicolaï, Christopher W. Nicholson, Changming Yue, Caio Silva, Philipp Werner, J. Hugo Dil, Juraj Krempaský, Gunther Springholz, Ralph Ernstorfer, Jan Minár, Laurenz Rettig, and Claude Monney:
[preprint] Field-induced ultrafast modulation of Rashba coupling at room temperature in ferroelectric α-GeTe(111).
arXiv:2204.11630

M. Puppin, C. W. Nicholson, C. Monney, Y. Deng, R. P. Xian, J. Feldl, S. Dong, A. Dominguez, H. Hübener, A. Rubio, M. Wolf, L. Rettig, and R. Ernstorfer:
Excited-state band structure mapping.
Phys. Rev. B 105, 075417 (2022).

Daniela Zahn, Florian Jakobs, Hélène Seiler, Tim A. Butcher, Dieter Engel, Jan Vorberger, Unai Atxitia, Yoav William Windsor, and Ralph Ernstorfer:
Intrinsic energy flow in laser-excited 3d ferromagnets.
Phys. Rev. Research 4, 013104 (2022).
Open data (on zenodo.org)

Michael Schüler, Tommaso Pincelli, Shuo Dong, Thomas P. Devereaux, Martin Wolf, Laurenz Rettig, Ralph Ernstorfer, and Samuel Beaulieu:
Polarization-Modulated Angle-Resolved Photoemission Spectroscopy: Towards Circular Dichroism without Circular Photons and Bloch Wavefunction Reconstruction.
Phys. Rev. X 12, 011019 (2022).

J. Maklar, M. Schüler, Y. W. Windsor, C. W. Nicholson, M. Puppin, P. Walmsley, I. R. Fisher, M. Wolf, R. Ernstorfer, M. A. Sentef, and L. Rettig:
Coherent Modulation of Quasiparticle Scattering Rates in a Photoexcited Charge-Density-Wave System.
Phys. Rev. Lett. 128, 026406 (2022).

2021

T.P.H. Sidiropoulos, N. Di Palo, D.E. Rivas, S. Severino, M. Reduzzi, B. Nandy, B. Bauerhenne, S. Krylow, T. Vasileiadis, T. Danz, P. Elliott, S. Sharma, K. Dewhurst, C. Ropers, Y. Joly, K. M. E. Garcia, M. Wolf, R. Ernstorfer, and J. Biegert:
Probing the energy conversion pathways between light, carriers and lattice in real time with attosecond core-level spectroscopy.
Phys. Rev. X 11, 041060 (2021).

Samuel Beaulieu, Michael Schüler, Jakub Schusser, Shuo Dong, Tommaso Pincelli, Julian Maklar, Alexander Neef, Friedrich Reinert, Martin Wolf, Laurenz Rettig, Ján Minár, and Ralph Ernstorfer:
Unveiling the Orbital Texture of 1T-TiTe2 using Intrinsic Linear Dichroism in Multidimensional Photoemission Spectroscopy.
npj Quantum Materials 6, 93 (2021).
Open data (on zenodo.org)

Daniela Zahn, Hélène Seiler, Yoav William Windsor, and Ralph Ernstorfer:
Ultrafast lattice dynamics and electron-phonon coupling in platinum extracted with a global fitting approach for time-resolved polycrystalline diffraction data.
Structural Dynamics 8, 064301 (2021).
Open code (on Zenodo)
Open data (on Zenodo)

Marios Zacharias, Hélène Seiler, Fabio Caruso, Daniela Zahn, Feliciano Giustino, Pantelis C. Kelires, and Ralph Ernstorfer:
Efficient first-principles methodology for the calculation of the all-phonon inelastic scattering in solids.
Phys. Rev. Lett., 127, 207401 (2021).
open access link

Marios Zacharias, Hélène Seiler, Fabio Caruso, Daniela Zahn, Feliciano Giustino, Pantelis C. Kelires, and Ralph Ernstorfer:
Multi-phonon diffuse scattering in solids from first-principles: Application to 2D MoS2, bulk MoS2, and black Phosphorous.
Phys. Rev. B, 104, 205109 (2021).
open access link

Shuo Dong, Samuel Beaulieu, Malte Selig, Philipp Rosenzweig, Dominik Christiansen, Tommaso Pincelli, Maciej Dendzik, Jonas D. Ziegler, Julian Maklar, R. Patrick Xian, Alexander Neef, Avaise Mohammed, Armin Schulz, Mona Stadler, Michael Jetter, Peter Michler, Takashi Taniguchi, Kenji Watanabe, Hidenori Takagi, Ulrich Starke, Alexey Chernikov, Martin Wolf, Hiro Nakamura, Andreas Knorr, Laurenz Rettig, and Ralph Ernstorfer:
[preprint] Observation of ultrafast interfacial Meitner-Auger energy transfer in a van der Waals heterostructure.
arxiv:2108.06803

H.A. Dürr, R. Ernstorfer, and B.J Siwick:
Revealing momentum-dependent electron-phonon and phonon-phonon coupling in complex materials with ultrafast
electron diffuse scattering.

MRS Bulletin (2021)

H. Seiler, D. Zahn, M. Zacharias, P. Hildebrandt, T. Vasileiadis, Y. W. Windsor, Y. Qi, C. Carbogno, C. Draxl, R. Ernstorfer, and F. Caruso:
Accessing the anisotropic nonthermal phonon populations in black phosphorus.
Nano Letters 21, 6171 (2021).
Open Data (on Zenodo)

Zhantao Chen, Nina Andrejevic, Nathan Drucker, Thanh Nguyen, R Patrick Xian, Tess Smidt, Yao Wang, Ralph Ernstorfer, Alan Tennant, Maria Chan, and Mingda Li:
Machine learning on neutron and x-ray scattering and spectroscopies.
Chem. Phys. Rev. 2, 031301 (2021).

H. Seiler, M. Krynski, D. Zahn, S. Hammer, Y. W. Windsor, T. Vasileiadis, J. Pflaum, R. Ernstorfer, M. Rossi, and H. Schwoerer:
Nuclear dynamics of singlet exciton fission in pentacene single crystals.
Science Advances 7 (26), eabg0869 (2021).
Open Data (on Zenodo)

Faruk Krečinić and Ralph Ernstorfer:
Wave-Mechanical Electron-Optical Modeling of Field-Emission Electron Sources.
Phys. Rev. Appl. 15, 064031 (2021).

Shuo Dong, Michele Puppin, Tommaso Pincelli, Samuel Beaulieu, Dominik Christiansen, Hannes Hübener, Christopher W. Nicholson, R. Patrick Xian, Maciej Dendzik, Yunpei Deng, Yoav William Windsor, Malte Selig, Ermin Malic, Angel Rubio, Andreas Knorr, Martin Wolf, Laurenz Rettig, and Ralph Ernstorfer:
Direct measurement of key exciton properties: Energy, dynamics, and spatial distribution of the wave function.
Natural Sciences, 2021;e10010
Related Highlight article by U. Wurstbauer

Open Data (on Zenodo)

J. Maklar, Y. W. Windsor, C. W. Nicholson, M. Puppin, P. Walmsley, V. Esposito, M. Porer, J. Rittmann, D. Leuenberger, M. Kubli, M. Savoini, E. Abreu, S. L. Johnson, P. Beaud, G. Ingold, U. Staub, I. R. Fisher, R. Ernstorfer, M. Wolf, and L. Rettig:
Nonequilibrium Charge-Density-Wave Order Beyond the Thermal Limit.
Nature Communications 12, 2499 (2021).
Open Data (on Zenodo)

S. Beaulieu, S. Dong, N. Tancogne-Dejean, M. Dendzik, T. Pincelli, J. Maklar, R. P. Xian, M. A. Sentef, M. Wolf, A. Rubio, L. Rettig, and R. Ernstorfer:
Ultrafast Light-Induced Lifshitz Transition.
Science Advances 7, eabd9275 (2021).
Open Data (on Zenodo)

Daniela Zahn, Florian Jakobs, Yoav William Windsor, Hélène Seiler, Thomas Vasileiadis, Tim A. Butcher, Yingpeng Qi, Dieter Engel, Unai Atxitia, Jan Vorberger, and Ralph Ernstorfer:
Lattice dynamics and ultrafast energy flow between electrons, spins, and phonons in a 3d ferromagnet.
Phys. Rev. Research 3, 023032 (2021)
Open Data (on Zenodo)

Y. W. Windsor, D. Zahn, R. Kamrla, J. Feldl, H. Seiler, C.-T. Chiang, M. Ramsteiner, W. Widdra, R. Ernstorfer, and L. Rettig:
Exchange-striction-driven ultrafast nonthermal lattice dynamics in NiO.
Phys. Rev. Lett. 126, 147202 (2021).
Open Data (on Zenodo)

R Patrick Xian, Ralph Ernstorfer, and Philipp M Pelz:
[preprint] Scalable multicomponent spectral analysis for high-throughput data annotation.
arXiv:2102.05604

2020

J. Maklar, S. Dong, S. Beaulieu, T. Pincelli, M. Dendzik, Y.W. Windsor, R.P. Xian, M. Wolf, R. Ernstorfer, and L. Rettig:
A quantitative comparison of time-of- flight momentum microscopes and hemispherical analyzers for time-resolved ARPES experiments.
Review of Scientific Instruments 91, 123112 (2020).
open access link
dataset link (Zenodo)

R. P. Xian, Y. Acremann, S. Y. Agustsson, M. Dendzik, K. Bühlmann, D. Curcio, D. Kutnyakhov, F. Pressacco, M. Heber, S. Dong, T. Pincelli, J. Demsar, W. Wurth, P. Hofmann, M. Wolf, L. Rettig, and R. Ernstorfer:
An open-source, distributed workflow for band mapping data in multidimensional photoemission spectroscopy.
Scientific Data 7, 442 (2020).
dataset link

S. Beaulieu, J. Schusser, S. Dong, M. Schüler, T. Pincelli, M. Dendzik, J. Maklar, A. Neef, H. Ebert, K. Hricovini, M. Wolf, J. Braun, L. Rettig, J. Minár, and R. Ernstorfer:
Revealing Hidden Orbital Pseudospin Texture with Time-Reversal Dichroism in Photoelectron Angular Distributions.
Phys. Rev. Lett. 125, 216404 (2020).
Open Data (on Zenodo)

M. Dendzik, R. P. Xian, E. Perfetto, D. Sangalli, D. Kutnyakhov, S. Dong, S. Beaulieu, T. Pincelli, F. Pressacco, D. Curcio, S. Y. Agustsson, M. Heber, J. Hauer, W. Wurth, G. Brenner, Y. Acremann, P. Hofmann, M. Wolf, A. Marini, G. Stefanucci, L. Rettig, and R. Ernstorfer:
Observation of an excitonic Mott transition through ultrafast core-cum-conduction photoemission spectroscopy.
Phys. Rev. Lett. 125, 096401 (2020)
dataset link (Zenodo)

R.P. Xian, V. Stimper, M. Zacharias, S. Dong, M. Dendzik, S. Beaulieu, B. Schölkopf, M. Wolf, L. Rettig, C. Carbogno, S. Bauer, and R. Ernstorfer:
[preprint] A machine learning route between band mapping and band structure
arXiv:2005.10210
open access link

M. Puppin, S. Polishchuk, N. Colonna, A. Crepaldi, D. N. Dirin, O. Nazarenko, R. De Gennaro, G. Gatti, S. Roth, T. Barillot, L. Poletto, R. P. Xian, L. Rettig, M. Wolf, R. Ernstorfer, M. V. Kovalenko, N. Marzari, M. Grioni, and M. Chergui:
Evidence of Large Polarons in Photoemission Band Mapping of the Perovskite Semiconductor CsPbBr3.
Phys. Rev. Lett. 124, 206402 (2020).

D. Zahn, P.-N. Hildebrandt, T. Vasileiadis, Y. W. Windsor, H. Seiler, and R. Ernstorfer:
Anisotropic non-equilibrium lattice dynamics of black phosphorus.
Nano Letters 20, 3728 (2020)
video presentation
dataset (zenodo.org): Femtosecond electron diffraction data of black phosphorus

D. Kutnyakhov, R. P. Xian, M. Dendzik, M. Heber, F. Pressacco, S. Y. Agustsson, L. Wenthaus, H. Meyer, S. Gieschen, G. Mercurio, A. Benz, K. Bühlman, S. Däster, R. Gort, D. Curcio, K. Volckaert, M. Bianchi, C. Sanders, J. A. Miwa, S. Ulstrup, A. Oelsner, C. Tusche, Y.-J. Chen, D. Vasilyev, K. Medjanik, G. Brenner, S. Dziarzhytski, H. Redlin, B. Manschwetus, S. Dong, J. Hauer, L. Rettig, J. Demsar, H.-J. Elmers, P. Hofmann, R. Ernstorfer, G. Schönhense, Y. Acremann, and W. Wurth:
Time- and momentum-resolved photoemission studies using time-of-flight momentum microscopy at a free-electron laser.
Rev. Sci. Instrum. 91, 013109 (2020).
open access link
Open Data (on Zenodo)

2019

V. Stimper, S. Bauer, R. Ernstorfer, B. Schölkopf, and R. P. Xian:
Multidimensional Contrast Limited Adaptive Histogram Equalization.
IEEE Access 7, 165437 (2019).
open access link
code download (github.com)

D. Christiansen, M. Selig, E. Malic, R. Ernstorfer, and A. Knorr:
Theory of exciton dynamics in time-resolved ARPES: intra- and intervalley scattering in two-dimensional semiconductors.
Phys. Rev. B. 100, 205401 (2019).
open access link

Th. Vasileiadis:
Ultrafast Energy Flow and Structural Changes in Nanoscale Heterostructures
PhD thesis, Freie Universität Berlin Repository

T. Vasileiadis, E. N. Skountzos, D. Foster, S. P. Coleman, D. Zahn, F. Krecinic, V. G. Mavrantzas, R. E. Palmer, and R. Ernstorfer:
Ultrafast rotational motions of supported nanoclusters probed by electron diffraction.
Nanoscale Horizons 4, 1164 (2019)
open access link

R. P. Xian, L. Rettig, and R. Ernstorfer:
Symmetry-guided nonrigid registration: the case for distortion correction in multidimensional photoemission spectroscopy.
Ultramicroscopy 202, 133 (2019)
open access link

C. W. Nicholson, M. Puppin, A. Lücke, U. Gerstmann, M. Krenz, W. G. Schmidt, L. Rettig, R. Ernstorfer, and M. Wolf:
Excited state band mapping and momentum-resolved ultrafast population dynamics in In/Si(111) nanowires investigated with XUV based time- and angle-resolved photoemission spectroscopy.
Phys. Rev. B 99, 155107 (2019)
open access link

D. Ehberger, K. J. Mohler, T. Vasileiadis, R. Ernstorfer, L. Waldecker, and P. Baum:
Terahertz Compression of Electron Pulses at a Planar Mirror Membrane.
Phys. Rev. Applied 11, 024034 (2019)
open access link

M. Puppin, Y. Deng, C. W. Nicholson, J. Feldl, N. B. M. Schroeter, H. Vita, P. S. Kirchmann, C. Monney, L. Rettig, M. Wolf, R. Ernstorfer:
Time- and angle-resolved photoemission spectroscopy of solids in the extreme ultraviolet at 500 kHz repetition rate.
Rev. Sci. Inst. 90, 023104 (2019)
open access link

2018

C. W. Nicholson, A. Lücke, W. Gero Schmidt, M. Puppin, L. Rettig, R. Ernstorfer, and M. Wolf:
Beyond the molecular movie: ultrafast dynamics of bands and bonds during a photo-induced phase transition.
Science 362, 821 (2018)
open access link

M. Puppin:
Time- and angle-resolved photoemission spectroscopy on bidimensional semiconductors with a 500 kHz extreme ultraviolet light source.
PhD thesis, Freie Universität Berlin Repository

T. Vasileiadis, L. Waldecker, D. Foster, A. Da Silva, R. Bertoni, R. E. Palmer, and R. Ernstorfer:
Ultrafast Heat Flow in Heterostructures of Au Nanoclusters on Thin Films: Atomic Disorder Induced by Hot Electrons.
ACS Nano 12, 7710 (2018)
open access link

F. Krečinić, J. Malter, A. Paarmann, M. Müller, and R. Ernstorfer:
Point-projection microscopy of nano-localized photoemission currents at sub-40 femtosecond time scales. Submitted.
open access link

2017

L. Waldecker, R. Bertoni, H. Hübener, T. Brumme, T. Vasileiadis, D. Zahn, A. Rubio, and R. Ernstorfer:
A Momentum-Resolved View on Electron-Phonon Coupling in Multilayer WSe2.
Phys. Rev. Lett. 119,036803 (2017)
open access link

M. Müller:
Femtosecond low-energy electron imaging and diffraction using nanotip photoemitters.
PhD thesis, Freie Universität Berlin Repository

L. Waldecker, T. Vasileiadis, R. Bertoni, R. Ernstorfer, T. Zier, F. Valencia H., M.E. Garcia, and E.S. Zijlstra:
Coherent and incoherent structural dynamics in Laser-Excited Antimony.
Phys. Rev. B 95, 054302 (2017)
open access link

2016

R. Bertoni, C.W. Nicholson, L. Waldecker, H. Hübener, C. Monney, U. De Giovannini, M. Puppin, M. Hoesch, E. Springate, R.T. Chapman, C. Cacho, M. Wolf, A. Rubio, and R. Ernstorfer:
Generation and evolution of spin-, valley- and layer-polarized excited carriers in inversion-symmetric WSe2.
Phys. Rev. Lett. 117, 277201 (2016)
open access link

T. Paasch-Colberg, S.Y. Kruchinin, Ö. Sağlam, S. Kapser, S. Cabrini, S. Mühlbrandt, J. Reichert, J.V. Barth, R. Ernstorfer, R. Kienberger, V.S. Yakovlev, N. Karpowicz, and A. Schiffrin:
Sub-cycle optical control of current in a semiconductor: from multiphoton to tunneling regime.
Optica 3, 1358 (2016)
open access link

C. Monney, M. Puppin, C.W. Nicholson, M. Hoesch, R.T. Chapman, E. Springate, H. Berger, A. Magrez, C. Cacho, R. Ernstorfer, and M. Wolf:
Revealing the role of electrons and phonons in the ultrafast recovery of charge density wave correlations in 1T-TiSe2.
Phys. Rev. B 94, 165165 (2016)
open access link

L. Waldecker:
Electron-Lattice Interactions and Ultrafast Structural Dynamics of Solids.
FU Berlin 2016
open access link

L. Waldecker:
Electron-Lattice Interactions and Ultrafast Structural Dynamics of Solids.
PhD thesis, Freie Universität Berlin Repository

L. Waldecker, R. Bertoni, R. Ernstorfer, and J. Vorberger:
Electron-Phonon Coupling and Energy Flow in a Simple Metal beyond the Two-Temperature Approximation.
Phys. Rev. X 6, 021003 (2016)
open access link

M. Müller, V. Kravtsov, A. Paarmann, M. B. Raschke, and R. Ernstorfer:
Nanofocused plasmon-driven sub-10 fs electron point source.
ACS Photonics 3, 611 (2016)
open access link

2015

L. Waldecker, T. A. Miller, M. Rude, R. Bertoni, J. Osmond, V. Pruneri, R. Simpson, R. Ernstorfer, and S. Wall:
Time-domain separation of optical properties from structural transitions in resonantly bonded materials.
Nature Materials 14, 991 (2015)
open access link

C. Lemell, S. Neppl, G. Wachter, K. Tőkési, R. Ernstorfer, P. Feulner, R. Kienberger, and J. Burgdörfer:
Real-time observation of collective excitations in photoemission.
Phys. Rev. B 91, 241101(R) (2015)
open access link

Ralph Ernstorfer:
Im Fokus ultrakurzer Laser: das Wechselspiel von Elektronen und Kristallstruktur
Max-Planck-Jahrbuch 2015

L. Waldecker, R. Bertoni, and R. Ernstorfer:
Compact femtosecond electron diffractometer with 100 keV electron bunches approaching the single-electron pulse duration limit.
J. Appl. Phys. 117, 044903 (2015)
open access link

M. Puppin, Y. Deng, O. Prochnow, J. Ahrens, Th. Binhammer, U. Morgner, M. Krenz, M. Wolf, and R. Ernstorfer:
500 kHz OPCPA delivering tunable sub-20 fs pulses with 15 W average power based on an all-ytterbium laser.
Opt. Exp. 23 1491-1497 (2015)
open access link

M. Puppin, Y. Deng, O. Prochnow, J. Matyschok, Th. Binhammer, U. Morgner, M. Wolf, and R. Ernstorfer:
Fiber-Slab-Pumped OPCPA for XUV-Based Time-Resolved Photoelectron Spectroscopy at 500 kHz Repetition Rate.
Springer Proceedings in Physics 162, 766 (2015)
open access link

M. Müller, A. Paarmann, and R. Ernstorfer:
Visualization of Photocurrents in Nanoobjects by Ultrafast Low-Energy Electron Point-Projection Imaging.
Springer Proceedings in Physics 162, 667 (2015)

S. Neppl, R. Ernstorfer, A. L. Cavalieri, C. Lemell, G. Wachter, E. Magerl, E.M. Bothschafter, M. Jobst, M. Hofstetter, U. Kleineberg, J.V. Barth, D. Menzel, J. Burgdörfer, P. Feulner, F. Krausz, and R. Kienberger:
Direct observation of electron propagation and dielectric screening on the atomic length scale.
Nature 517, 342 (2015)
open access link

2014

M. Müller, A. Paarmann, and R. Ernstorfer:
Femtosecond electrons probing currents and atomic structure in nanomaterials.
Nature Communications 5, 5292 (2014)
open access link

A. Schiffrin, T. Paasch-Colberg, N. Karpowicz, V. Apalkov, D. Gerster, S. Mühlbrandt, M. Korbman, J. Reichert, M. Schultze, S. Holzner, J.V. Barth, R. Kienberger, R. Ernstorfer, V.S. Yakovlev, M.I. Stockman, and F. Krausz:
Addendum: Optical-field-induced current in dielectrics.
Nature 507, 386 (2014)
open access link

T. Paasch-Colberg, A. Schiffrin, N. Karpowicz, S. Kruchinin, Ö. Sağlam, S. Keiber, O. Razskazovskaya, S. Mühlbrandt, A. Alnaser, M. Kübel, V. Apalkov, D. Gerster, J. Reichert, T. Wittmann, J.V. Barth, M.I. Stockman, R. Ernstorfer, V.S. Yakovlev, R. Kienberger, and F. Krausz:
Solid-state light-phase detector.
Nature Photonics 8, 214 (2014)
open access link

2013

S. Lüneburg, M. Müller, A. Paarmann, and R. Ernstorfer:
Microelectrode for energy and current control of nanotip field electron emitters.
Appl. Phys. Lett. 103, 213506 (2013)
open access link

A. Schiffrin, R. Ernstorfer, F. Krausz, T. Paasch-Colberg:
Opto-electronic device and pulse processing method.
Patent Application: WO2013156045A1
open access link

Sebastian Lüneburg:
Novel electrostatic microlens for collimation of femtosecond pulses photoemitted from a nano-sized tip.
Diploma Thesis, HU Berlin 2013.

Niels Schröter:
Numerical study of high harmonic generation as a light source for time- and angle-resolved photoelectron spectroscopy.
Master’s Thesis, FU Berlin 2013.

S. Neppl, R. Ernstorfer, A.L. Cavalieri, J.V. Barth, D. Menzel, F. Krausz, P. Feulner, and R. Kienberger:
Probing ultrafast electron dynamics in condensed matter with attosecond photoemission.
Proc. SPIE. 8623, Ultrafast Phenomena and Nanophotonics XVII, 862312.
open access link

E.M. Bothschafter, A. Paarmann, N. Karpowicz, E.S. Zijlstra, M.E. Garcia, F. Krausz, R. Kienberger, and R. Ernstorfer:
Interband excitation and carrier relaxation as displacive driving force for coherent phonons.
open access link

M. Müller, A. Paarmann, C. Xu, and R. Ernstorfer:
Coherent Electron Source for Ultrafast Electron Diffraction and Imaging.
open access link

E.M. Bothschafter, A. Paarmann, E.S. Zijlstra, N. Karpowicz, M.E. Garcia, R. Kienberger, and R. Ernstorfer:
Ultrafast Evolution of the Excited-State Potential Energy Surface of TiO2 Single Crystals Induced by Carrier Cooling.
Phys. Rev. Lett. 110, 067402 (2013)
open access link

A. Schiffrin, T. Paasch-Colberg, N. Karpowicz, V. Apalkov, D. Gerster, S. Mühlbrandt, M. Korbman, J. Reichert, M. Schultze, S. Holzner, J.V. Barth, R. Kienberger, R. Ernstorfer, V.S. Yakovlev, M.I. Stockman, and F. Krausz:
Optical-field-induced current in dielectrics.
Nature 493, 70–74 (2013)
open access link

2012

A. Paarmann, M. Gulde, M. Müller, S. Schäfer, S. Schweda, M. Maiti, C. Xu, T. Hohage, F. Schenk, C. Ropers, and R. Ernstorfer:
Coherent femtosecond low-energy single-electron pulses for time-resolved diffraction and imaging: A numerical study.
J. Appl. Phys. 112, 113109 (2012)
open access link

S. Neppl, R. Ernstorfer, E.M. Bothschafter, A.L. Cavalieri, D. Menzel, J.V. Barth, F. Krausz, R. Kienberger, and P. Feulner:
Attosecond Time-Resolved Photoemission from Core and Valence States of Magnesium.
Phys. Rev. Lett. 109, 087401 (2012)
open access link

S. Kahra, G. Leschhorn, M. Kowalewski, A. Schiffrin, E. Bothschafter, W. Fuß, R. de Vivie-Riedle, R. Ernstorfer, F. Krausz, R. Kienberger, and T. Schaetz:
A molecular conveyor belt by controlled delivery of single molecules into ultrashort laser pulses.
Nat. Phys. 8, 238-242 (2012)
open access link

2011

A. Cossaro, M. Puppin, D. Cvetko, G. Kladnik, A. Verdini, M. Coreno, M. de Simone, L. Floreano, and A. Morgante:
Tailoring SAM-on-SAM Formation.
J. Phys. Chem. Lett., 2, 3124-3129 (2011)
open access link

E. Magerl, S. Neppl, A .L. Cavalieri, E.M. Bothschafter, M. Stanislawski, Th. Uphues, M. Hofstetter, U. Kleineberg, J. V. Barth, D. Menzel, F. Krausz, R. Ernstorfer, R. Kienberger, and P. Feulner:
A flexible apparatus for attosecond photoelectron spectroscopy of solids and surfaces.
Rev. Sci. Instrum. 82, 063104 (2011)
open access link

2010

M. Schultze, M. Fieß, N. Karpowicz, J. Gagnon, M. Korbman, M. Hofstetter, S. Neppl, A. L. Cavalieri, Y. Komninos, Th. Mercouris, C.A. Nicolaides, R. Pazourek, S. Nagele, J. Feist, J. Burgdörfer, A. M. Azzeer, R. Ernstorfer, R. Kienberger, U. Kleineberg, E. Goulielmakis, F. Krausz, V.S. Yakovlev:
Delay in Photoemission.
Science 328, 1658 (2010)

A. L. Cavalieri, F. Krausz, R. Ernstorfer, R. Kienberger, P. Feulner, J. V. Barth, and D. Menzel:
Attosecond Time-Resolved Spectroscopy at Surfaces.
Dynamics at Solid State Surfaces and Interfaces, Vol. 1: Current Developments, Edited by: U. Bovensiepen, H. Petek, M. Wolf, Wiley-VCH, Weinheim, 2010, 537-554.

R.J.D. Miller, R. Ernstorfer, M. Harb, M. Gao, C.T. Hebeisen, H. Jean-Ruel, C. Lu, G. Moriena, G. Sciaini:
Making the molecular movie: first frames.
Acta Cryst. A 66, 137-156 (2010)
open access link

E. Bothschafter, A. Schiffrin, V. Yakovlev, A. Azzeer, F. Krausz, R. Ernstorfer, and R. Kienberger:
Collinear generation of ultrashort UV and XUV pulses.
Optics Express 18, 9173-9180 (2010)
open access link

2009

M. Harb, W. Peng, G. Sciaini, C.T. Hebeisen, R. Ernstorfer, M.A. Eriksson, M.G. Lagally, S.G. Kruglik, R.J.D. Miller:
Excitation of longitudinal and transverse coherent acoustic phonons in nanometer free-standing films of (001) Si.
Phys. Rev. B 79, 094301 (2009)

G. Sciaini, M. Harb, S.G. Kruglik, Th. Payer, C.T. Hebeisen, F.-J. Meyer zu Heringdorf, M. Yamaguchi, M. Horn-von Hoegen, R. Ernstorfer, R.J.D. Miller:
Electronic acceleration of atomic motions and disordering in bismuth.
Nature 458, 56-59 (2009)

R. Ernstorfer, M. Harb, C.T. Hebeisen, G. Sciaini, T. Dartigalongue, R.J.D. Miller:
The Formation of Warm Dense Matter: Experimental Evidence for Electronic Bond Hardening in Gold.
Science 323, 1033 (2009)

2008

C.T. Hebeisen, G. Sciaini, M. Harb, R. Ernstorfer, S.G. Kruglik, and R. J. Dwayne Miller:
Direct visualization of charge distributions during femtosecond laser ablation of a Si (100) surface.
Phys. Rev. B 78, 081403 (2008)

C.T. Hebeisen, G. Sciaini, M. Harb, R. Ernstorfer, T. Dartigalongue, S.G. Kruglik, and R.J.D. Miller:
Grating enhanced ponderomotive scattering for visualization and full characterization of femtosecond electron pulses
Optics Express 16, 3334-3341 (2008)

M. Harb, R. Ernstorfer, C.T. Hebeisen, G. Sciaini, W. Peng, T. Dartigalongue, M.A. Eriksson, M.G. Lagally, S.G. Kruglik, and R.J.D. Miller:
Electronically Driven Structure Changes of Si Captured by Femtosecond Electron Diffraction.
Phys. Rev. Lett. 100, 155504 (2008)

2007

L. Gundlach, R. Ernstorfer and F. Willig:
Dynamics of photoinduced electron transfer from adsorbed molecules into solids.
Appl. Phys. A 88, 481 (2007)

L. Gundlach, R. Ernstorfer and F. Willig:
Pathway-Dependent Electron Transfer for Rod-Shaped Perylene-Derived Molecules Adsorbed in Nanometer-Size TiO2 Cavities.
J. Phys. Chem. C 111, 13586 (2007)

L. Gundlach, R. Ernstorfer, and F. Willig
Dynamics of electron injection from the excited state of anchored molecules into semiconductors.
In: P. Corkum, D. Jonas, R.J.D. Miller, A.M. Weiner (Eds.), Ultrafast Phenomena XV, Springer Series in Chemical Physics 88, Springer Series in Chemical Physics, Vol. 88 (2007), pp. 270.

R. Ernstorfer, M. Harb, T. Dartigalongue, C. T. Hebeisen, R. E. Jordan, L. Zhu, and R. J. D. Miller:
Femtosecond Electron Diffraction Study on the Heating and Melting Dynamics of Gold.
Springer Series in Chemical Physics, Vol. 88 (2007), pp. 755.

C. T. Hebeisen, R. Ernstorfer, M. Harb, T. Dartigalongue, R. E. Jordan, L. Zhu, and R. J. D. Miller
Characterization of Ultrashort Electron Pulses.
In: P. Corkum, D. Jonas, R.J.D. Miller, A.M. Weiner (Eds.), Ultrafast Phenomena XV, Springer Series in Chemical Physics 88, Springer Series in Chemical Physics, Vol. 88 (2007), pp. 758.

J. Dwyer, R. E. Jordan, C. T. Hebeisen, M. Harb, R. Ernstorfer, T. Dartigalongue, and R. J. D. Miller:
Femtosecond Electron Diffraction: An Atomic Perspective of Condensed Phase Dynamics.
J. Mod. Optics 54, 905 (2007)

J. Dwyer, R. E. Jordan, C. T. Hebeisen, M. Harb, R. Ernstorfer, T. Dartigalongue, and R. J. D. Miller:
Experimental basics for femtosecond electron diffraction studies.
J. Mod. Optics 54, 923 (2007)

L. Gundlach, R. Ernstorfer, and F. Willig:
Ultrafast interfacial electron transfer from the excited state of anchored molecules into a semiconductor.
Prog. Surf. Sci. 82, 355 (2007)

L. Gundlach, J. Szarko, L. D. Socaciu-Siebert, A. Neubauer, R. Ernstorfer, and F. Willig:
Different orientations of large rigid organic chromophores at the rutile TiO2 surface controlled by different binding geometries of specific anchor groups
Phys. Rev. B 75, 125320 (2007)

2006

C. T. Hebeisen, R. Ernstorfer, M. Harb, T. Dartigalongue, R. E. Jordan, and R. J. D. Miller:
Femtosecond electron pulse characterization using laser ponderomotive scattering.
Opt. Lett. 31, 3517 (2006)

M. Harb, R. Ernstorfer, T. Dartigalongue, C. T. Hebeisen, R. E. Jordan, and R. J. D. Miller:
Carrier Relaxation and Lattice Heating Dynamics in Silicon Revealed by Femtosecond Electron Diffraction.
J. Phys. Chem. B 110, 25308 (2006)

R. Ernstorfer, L. Gundlach, S. Felber, W. Storck, R. Eichberger and F. Willig:
Role of Molecular Anchor Groups in Molecule-to-Semiconductor Electron Transfer.
J. Phys. Chem. B 110, 25383 (2006)

J. Piel, E. Riedle, L. Gundlach, R. Ernstorfer, and R. Eichberger:
Sub-20 fs visible pulses with 750 nJ energy from a 100 kHz noncollinear optical parametric amplifier.
Optics Letters 31, 1289-1291 (2006)

L. Gundlach, R. Ernstorfer, F. Willig:
Escape dynamics of photoexcited electrons at catechol:TiO2(110).
Phys. Rev. B 74, 035324 (2006)

C.T. Hebeisen, J.R. Dwyer, R.E. Jordan, M. Harb, R. Ernstorfer, and R.J.D. Miller:
Femtosecond Electron Diffraction: Making the Molecular Movie.
Proc. of SPIE 5969, 59692G (2005).

L. Wang, R. Ernstorfer, F. Willig, and V. May:
Absorption Spectra Related to Heterogeneous Electron Transfer Reactions: The Perylene TiO2 System.
J. Phys. Chem. B 109 9589-9595 (2005)

J.R. Dwyer, Christoph T. Hebeisen, R. Ernstorfer, M. Harb, V.B. Deyirmenjian, R.E. Jordan, R.J.D. Miller:
Femtosecond electron diffraction: ‘making the molecular movie’.
Phil. Trans. R. Soc. A 364, 741-778 (2006)

P. Persson, M.J. Lundqvist, R. Ernstorfer, W.A. Goddard III, and F. Willig:
Quantum Chemical Calculations of the Influence of Anchor-Cum-Spacer Groups on Femtosecond Electron Transfer Times in Dye-Sensitized Semiconductor Nanocrystals.
J. Chem. Theory Comput. 2, 441-451 (2006)

2005

R. Ernstorfer, S. Felber, W. Storck, E. Galoppini, Q. Wei, and F. Willig:
Distance dependence of heterogeneous electron transfer probed in ultrahigh vacuum with femtosecond transient absorption.
Res. Chem. Interm. 31, 643 (2005)

L. Gundlach, R. Ernstorfer, E. Riedle, R. Eichberger, and F. Willig:
Femtosecond two-photon photoemission at 150 kHz utilizing two noncollinear optical parametric amplifiers for measuring ultrafast electron dynamics.
Appl. Phys. B 80, 727-731 (2005)

L. Töben, L. Gundlach, R. Ernstorfer, R. Eichberger, T. Hannappel, F. Willig, A. Zeiser, J. F¨orstner, A. Knorr, P. Hahn, and W. Schmidt:
Femtosecond Transfer Dynamics of Photogenerated Electrons at a Surface Resonance of Reconstructed InP(100).
Phys. Rev. Lett. 94, 067601 (2005)

2004

R. Ernstorfer:
Spectroscopic investigation of photoinduced heterogeneous electron transfer.
PhD thesis

R. Ernstorfer, L. Gundlach, C. Zimmermann, F. Willig, R. Eichberger, and E. Riedle:
Generation of sub-20 fs tunable visible pulses from a 100 kHz NOPA for measuring ultrafast heterogeneous electron transfer.
Springer Series in Optical Sciences, Vol. 95 (2004), pp. 393-398.

L. Töben, L. Gundlach, T. Hannappel, R. Ernstorfer, R. Eichberger, and F. Willig:
Dynamics of electron scattering between bulk states and the C1 surface state of InP(100).
Appl. Phys. A 78, 239 (2004)

2003

R. Ernstorfer, L. Töben, L. Gundlach, S. Felber, E. Galoppini, Q. Wei, R. Eichberger, W. Storck, C. Zimmermann, and F. Willig:
Femtosecond electron injection from optically populated donor states into the conduction band of semiconductors.
Proc. SPIE Int. Soc. Opt. Eng. 5223, 110 (2003).