dc.contributor.author |
Teitelbaum, Samuel W. |
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dc.contributor.author |
Henighan, Thomas C. |
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dc.contributor.author |
Liu, Hanzhe |
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dc.contributor.author |
Jiang, Mason P. |
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dc.contributor.author |
Zhu, Diling |
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dc.contributor.author |
Chollet, Matthieu |
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dc.contributor.author |
Sato, Takahiro |
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dc.contributor.author |
Murray, Éamonn D. |
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dc.contributor.author |
Fahy, Stephen B. |
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dc.contributor.author |
O'Mahony, Shane |
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dc.contributor.author |
Bailey, Trevor P. |
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dc.contributor.author |
Uher, Ctirad |
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dc.contributor.author |
Trigo, Mariano |
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dc.contributor.author |
Reis, David A. |
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dc.date.accessioned |
2021-12-07T16:39:02Z |
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dc.date.available |
2021-12-07T16:39:02Z |
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dc.date.issued |
2021-05-18 |
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dc.identifier.citation |
Teitelbaum, S. W., Henighan, T. C., Liu, H., Jiang, M. P., Zhu, D., Chollet, M., Sato, T., Murray, E. D., Fahy, S. B., O’Mahony, S., Bailey, T. P., Uher, C., Trigo, M. and Reis, D. A. (2021) 'Measurements of nonequilibrium interatomic forces using time-domain x-ray scattering', Physical Review B, 103(3), L180101 (6pp). doi: 10.1103/PhysRevB.103.L180101 |
en |
dc.identifier.volume |
103 |
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dc.identifier.issued |
3 |
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dc.identifier.startpage |
1 |
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dc.identifier.endpage |
6 |
en |
dc.identifier.issn |
1098-0121 |
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dc.identifier.uri |
http://hdl.handle.net/10468/12328 |
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dc.identifier.doi |
10.1103/PhysRevB.103.L180101 |
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dc.description.abstract |
We demonstrate an experimental approach to determining the excited-state interatomic forces using femtosecond x-ray pulses from an x-ray free-electron laser. We determine experimentally the excited-state interatomic forces that connect photoexcited carriers to the nonequilibrium lattice dynamics in the prototypical Peierls-distorted material, bismuth. The forces are obtained by a constrained least-squares fit of a pairwise interatomic force model to the excited-state phonon dispersion relation as measured by the time- and momentum-resolved x-ray diffuse scattering. We find that photoexcited carriers weaken predominantly the nearest-neighbor forces, which drives the measured softening of the transverse acoustic modes throughout the Brillouin zone as well as the zone-center A1g optical mode. This demonstrates a bond-selective approach to measuring electron-phonon coupling relevant to a broad range of photoinduced phase transitions and transient light-driven states in quantum materials. |
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dc.description.sponsorship |
Division of Materials Sciences and Engineering (Contract No. DE-AC02-76SF00515); U.S. Department of Energy, Office of Basic Energy Sciences (Award No. DE-SC-0008574); Irish Research Council (Award No. GOIPG/2015/2784) |
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dc.format.mimetype |
application/pdf |
en |
dc.language.iso |
en |
en |
dc.publisher |
American Physical Society |
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dc.rights |
© 2021, American Physical Society. All rights reserved. |
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dc.subject |
Electron-phonon coupling |
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dc.subject |
Peierls transition |
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dc.subject |
Phonons |
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dc.subject |
Structural phase transition |
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dc.subject |
Ultrafast optics |
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dc.subject |
X-ray scattering |
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dc.subject |
X-ray lasers |
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dc.subject |
Nonequilibrium systems |
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dc.subject |
Semimetals |
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dc.subject |
Synchrotron radiation & free-electron lasers |
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dc.subject |
Photoexcitation |
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dc.subject |
Ultrafast pump-probe spectroscopy |
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dc.title |
Measurements of nonequilibrium interatomic forces using time-domain x-ray scattering |
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dc.type |
Article (peer-reviewed) |
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dc.internal.authorcontactother |
Stephen B. Fahy, Physics, University College Cork, Cork, Ireland. +353-21-490-3000 Email: s.fahy@ucc.ie |
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dc.internal.availability |
Full text available |
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dc.description.version |
Published Version |
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dc.contributor.funder |
Science Foundation Ireland
|
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dc.contributor.funder |
Irish Research Council
|
en |
dc.contributor.funder |
Office of Science
|
en |
dc.contributor.funder |
U.S. Department of Energy
|
en |
dc.contributor.funder |
Basic Energy Sciences
|
en |
dc.contributor.funder |
Division of Materials Sciences and Engineering |
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dc.description.status |
Peer reviewed |
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dc.identifier.journaltitle |
Physical review B: Condensed matter and materials physics |
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dc.internal.IRISemailaddress |
s.fahy@ucc.ie |
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dc.identifier.articleid |
L180101 |
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dc.relation.project |
info:eu-repo/grantAgreement/SFI/SFI Investigator Programme/12/IA/1601/IE/Ultrafast energy dissipation in semimetals and semiconductors: Simulation based on first-principles electronic structure theory/
|
en |
dc.identifier.eissn |
1550-235X |
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