{"title":"Influence of band occupation on electron-phonon coupling in gold.","authors":"Tobias Held, Sebastian T Weber, Baerbel Rethfeld","doi":"10.1088/1361-648X/ad9da7","DOIUrl":null,"url":null,"abstract":"<p><p>Electron-phonon coupling is a fundamental process that governs the energy relaxation dynamics
of solids excited by ultrafast laser pulses. It has been found to strongly depend on the electron
temperature as well as on nonequilibrium effects. Recently, the effect of occupational nonequilibrium
in noble metals, which outlasts the fully kinetic stage, has come into increased focus. In this
study, we investigate the influence of nonequilibrium density distributions in gold on the electron-
phonon coupling. We find a large effect on the coupling parameter which describes the energy
exchange between electrons and phonons. Our results challenge the conventional view that electron
temperature alone is a sufficient predictor of electron-phonon coupling.</p>","PeriodicalId":16776,"journal":{"name":"Journal of Physics: Condensed Matter","volume":" ","pages":""},"PeriodicalIF":2.3000,"publicationDate":"2024-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Physics: Condensed Matter","FirstCategoryId":"101","ListUrlMain":"https://doi.org/10.1088/1361-648X/ad9da7","RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"PHYSICS, CONDENSED MATTER","Score":null,"Total":0}
引用次数: 0
Abstract
Electron-phonon coupling is a fundamental process that governs the energy relaxation dynamics
of solids excited by ultrafast laser pulses. It has been found to strongly depend on the electron
temperature as well as on nonequilibrium effects. Recently, the effect of occupational nonequilibrium
in noble metals, which outlasts the fully kinetic stage, has come into increased focus. In this
study, we investigate the influence of nonequilibrium density distributions in gold on the electron-
phonon coupling. We find a large effect on the coupling parameter which describes the energy
exchange between electrons and phonons. Our results challenge the conventional view that electron
temperature alone is a sufficient predictor of electron-phonon coupling.
期刊介绍:
Journal of Physics: Condensed Matter covers the whole of condensed matter physics including soft condensed matter and nanostructures. Papers may report experimental, theoretical and simulation studies. Note that papers must contain fundamental condensed matter science: papers reporting methods of materials preparation or properties of materials without novel condensed matter content will not be accepted.