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Quantitative regulation of electron-phonon coupling.
Pei, Shenghai; Zhang, Zejuan; Jiao, Chenyin; Wang, Zhenyu; Lv, Jian; Zhang, Yujun; Huang, Mingyuan; Wang, Yanchao; Wang, Zenghui; Xia, Juan.
Afiliación
  • Pei S; Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 610054, People's Republic of China.
  • Zhang Z; Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 610054, People's Republic of China.
  • Jiao C; Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 610054, People's Republic of China.
  • Wang Z; International Center of Future Science, College of Physics, Jilin University, Changchun 130012, People's Republic of China.
  • Lv J; International Center of Computational Method & Software, College of Physics, Jilin University, Changchun 130012, People's Republic of China.
  • Zhang Y; International Center of Computational Method & Software, College of Physics, Jilin University, Changchun 130012, People's Republic of China.
  • Huang M; School of Physics and Astronomy and Key Lab of Quantum Information of Yunnan Province, Yunnan University, Kunming 650091, People's Republic of China.
  • Wang Y; Department of Physics, Southern University of Science and Technology, Shenzhen 518055, People's Republic of China.
  • Wang Z; International Center of Computational Method & Software, College of Physics, Jilin University, Changchun 130012, People's Republic of China.
  • Xia J; Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 610054, People's Republic of China.
Rep Prog Phys ; 87(7)2024 Jul 03.
Article en En | MEDLINE | ID: mdl-38957891
ABSTRACT
Electron-phonon (e-p) coupling plays a crucial role in various physical phenomena, and regulation of e-p coupling is vital for the exploration and design of high-performance materials. However, the current research on this topic lacks accurate quantification, hindering further understanding of the underlying physical processes and its applications. In this work, we demonstrate quantitative regulation of e-p coupling, by pressure engineering andin-situspectroscopy. We successfully observe both a distinct vibrational mode and a strong Stokes shift in layered CrBr3, which are clear signatures of e-p coupling. This allows us to achieve precise quantification of the Huang-Rhys factorSat the actual sample temperature, thus accurately determining the e-p coupling strength. We further reveal that pressure efficiently regulates the e-p coupling in CrBr3, evidenced by a remarkable 40% increase inSvalue. Our results offer an approach for quantifying and modulating e-p coupling, which can be leveraged for exploring and designing functional materials with targeted e-p coupling strengths.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Rep Prog Phys Año: 2024 Tipo del documento: Article Pais de publicación: Reino Unido
Texto completo
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XML
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Rep Prog Phys Año: 2024 Tipo del documento: Article Pais de publicación: Reino Unido