Theory of out-of-equilibrium ultrafast relaxation dynamics in metals
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F17%3A10366574" target="_blank" >RIV/00216208:11320/17:10366574 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1103/PhysRevB.96.174439" target="_blank" >http://dx.doi.org/10.1103/PhysRevB.96.174439</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevB.96.174439" target="_blank" >10.1103/PhysRevB.96.174439</a>
Alternative languages
Result language
angličtina
Original language name
Theory of out-of-equilibrium ultrafast relaxation dynamics in metals
Original language description
Ultrafast laser excitation of a metal causes correlated, highly nonequilibrium dynamics of electronic and ionic degrees of freedom, which are, however, only poorly captured by the widely used two-temperature model. Here we develop an out-of-equilibrium theory that captures the full dynamic evolution of the electronic and phononic populations and provides a microscopic description of the transfer of energy delivered optically into electrons to the lattice. All essential nonequilibrium energy processes, such as electron-phonon and phonon-phonon interactions are taken into account. Moreover, as all required quantities are obtained from first-principles calculations, the model gives a realistic and material-dependent description of the relaxation dynamics without the need for fitted parameters. We apply the model to FePt and show that the detailed relaxation is out-of-equilibrium for ps.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10302 - Condensed matter physics (including formerly solid state physics, supercond.)
Result continuities
Project
<a href="/en/project/GJ15-08740Y" target="_blank" >GJ15-08740Y: Spin current generation on a femtosecond timescale</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Physical Review B
ISSN
2469-9950
e-ISSN
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Volume of the periodical
96
Issue of the periodical within the volume
17
Country of publishing house
US - UNITED STATES
Number of pages
13
Pages from-to
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UT code for WoS article
000416233500013
EID of the result in the Scopus database
2-s2.0-85038596749