2026-06-05T05:21:16Z https://archive.materialscloud.org/oai2d

oai:materialscloud.org:946 2021-07-16T19:26:07Z openaire_data community-mcarchive

Géneaux, Romain Timrov, Iurii Kaplan, Christopher Ross, Andrew Kraus, Peter Leone, Stephen Géneaux, Romain Timrov, Iurii Kaplan, Christopher Ross, Andrew Kraus, Peter Leone, Stephen 2021-07-16 In Peierls-distorted materials, photoexcitation leads to a strongly coupled transient response between structural and electronic degrees of freedom, always measured independently of each other. Here we use transient reflectivity in the extreme ultraviolet to quantify both responses in photoexcited bismuth in a single measurement. With the help of first-principles calculations based on density-functional theory (DFT) and time-dependent DFT, the real-space atomic motion and the temperature of both electrons and holes as a function of time are captured simultaneously, retrieving an anticorrelation between the A1g phonon dynamics and carrier temperature. The results reveal a coherent, bi-directional energy exchange between carriers and phonons, which is a dynamical counterpart of the static Peierls-Jones distortion, providing first-time validation of previous theoretical predictions. text/markdown application/gzip text/plain https://doi.org/10.24435/materialscloud:m2-31 oai:materialscloud.org:946 mcid:2021.111 eng Materials Cloud https://arxiv.org/abs/2103.03137 https://doi.org/10.1103/PhysRevResearch.3.033210 https://archive.materialscloud.org/communities/mcarchive https://doi.org/10.24435/materialscloud:1v-p7 info:eu-repo/semantics/openAccess Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode bismuth density-functional theory time-dependent density-functional theory absorption spectrum transient reflectivity extreme ultraviolet photoexcitation real-space atomic motion density of states SNSF MARVEL/OSP CSCS Investissements d'Avenir Coherent energy exchange between carriers and phonons in Peierls-distorted bismuth unveiled by broadband XUV pulses info:eu-repo/semantics/other