Open Access
Communications Physics, volume 4, issue 1, publication number 165
Observation of a giant mass enhancement in the ultrafast electron dynamics of a topological semimetal
Ingham Clark Oliver D.
1
,
Freyse F.
1, 2
,
Aguilera Irene
3
,
Ionov Andrey
5
,
Bozhko S.I
5, 6
,
Yashina Lada V.
4
,
1
Helmholtz-Zentrum Berlin für Materialien und Energie, Elektronenspeicherring BESSY II, Berlin, Germany
|
2
Institut für Physik und Astronomie, Universität Potsdam, Potsdam, Germany
|
3
Peter Grünberg Institute and Institute for Advanced Simulation, Forschungszentrum Jülich and JARA, Jülich, Germany
|
6
School of Physics and Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN), Trinity College Dublin, Dublin, Ireland
|
Publication type: Journal Article
Publication date: 2021-07-16
Journal:
Communications Physics
Quartile SCImago
Q1
Quartile WOS
Q1
Impact factor: 5.5
ISSN: 23993650
General Physics and Astronomy
Abstract
Topological phases of matter offer exciting possibilities to realize lossless charge and spin information transport on ultrafast time scales. However, this requires detailed knowledge of their nonequilibrium properties. Here, we employ time-, spin- and angle-resolved photoemission to investigate the ultrafast response of the Sb(111) spin-polarized surface state to femtosecond-laser excitation. The surface state exhibits a giant mass enhancement which is observed as a kink structure in its energy-momentum dispersion above the Fermi level. The kink structure, originating from the direct coupling of the surface state to the bulk continuum, is characterized by an abrupt change in the group velocity by ~70%, in agreement with our GW-based band structure calculations. Our observation of this connectivity in the transiently occupied band structure enables the unambiguous experimental verification of the topological nature of the surface state. The influence of bulk-surface coupling is further confirmed by our measurements of the electron dynamics, which show that bulk and surface states behave as a single thermalizing electronic population with distinct contributions from low-k electron-electron and high-k electron-phonon scatterings. These findings are important for future applications of topological semimetals and their excitations in ultrafast spintronics.
Citations by journals
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1
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Physical Review Materials
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Physical Review Materials
1 publication, 25%
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Nano Letters
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Nano Letters
1 publication, 25%
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Review of Scientific Instruments
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Review of Scientific Instruments
1 publication, 25%
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Springer Theses
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Springer Theses
1 publication, 25%
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1
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Citations by publishers
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1
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American Physical Society (APS)
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American Physical Society (APS)
1 publication, 25%
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American Chemical Society (ACS)
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American Chemical Society (ACS)
1 publication, 25%
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American Institute of Physics (AIP)
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American Institute of Physics (AIP)
1 publication, 25%
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Springer Nature
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Springer Nature
1 publication, 25%
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1
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- We do not take into account publications that without a DOI.
- Statistics recalculated only for publications connected to researchers, organizations and labs registered on the platform.
- Statistics recalculated weekly.
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Ingham Clark O. D. et al. Observation of a giant mass enhancement in the ultrafast electron dynamics of a topological semimetal // Communications Physics. 2021. Vol. 4. No. 1. 165
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Ingham Clark O. D., Freyse F., Aguilera I., Frolov A. S., Ionov A., Bozhko S., Yashina L. V., Sánchez-Barriga J. Observation of a giant mass enhancement in the ultrafast electron dynamics of a topological semimetal // Communications Physics. 2021. Vol. 4. No. 1. 165
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TY - JOUR
DO - 10.1038/s42005-021-00657-6
UR - https://doi.org/10.1038%2Fs42005-021-00657-6
TI - Observation of a giant mass enhancement in the ultrafast electron dynamics of a topological semimetal
T2 - Communications Physics
AU - Freyse, F.
AU - Aguilera, Irene
AU - Frolov, Alexander S
AU - Ionov, Andrey
AU - Bozhko, S.I
AU - Yashina, Lada V.
AU - Sánchez-Barriga, J.
AU - Ingham Clark, Oliver D.
PY - 2021
DA - 2021/07/16 00:00:00
PB - Springer Nature
IS - 1
VL - 4
SN - 2399-3650
ER -
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@article{2021_Ingham Clark,
author = {F. Freyse and Irene Aguilera and Alexander S Frolov and Andrey Ionov and S.I Bozhko and Lada V. Yashina and J. Sánchez-Barriga and Oliver D. Ingham Clark},
title = {Observation of a giant mass enhancement in the ultrafast electron dynamics of a topological semimetal},
journal = {Communications Physics},
year = {2021},
volume = {4},
publisher = {Springer Nature},
month = {jul},
url = {https://doi.org/10.1038%2Fs42005-021-00657-6},
number = {1},
doi = {10.1038/s42005-021-00657-6}
}