中文版 | English
Title

Effect of diffusion on acoustic deformation potential characterization through coherent acoustic phonon dynamics

Author
Corresponding AuthorGuo,Liang
Joint first authorHe,Feng
Publication Years
2022-08-01
DOI
Source Title
ISSN
2469-9950
EISSN
2469-9969
Volume106Issue:6Pages:L060304
Abstract

Ultrafast spectroscopy of coherent acoustic phonon (CAP) dynamics has recently been proposed as a method to characterize acoustic deformation potential (ADP), a key standard to quantify carrier-acoustic phonon coupling in semiconductors. In this Letter, we illustrate the importance of addressing the diffusion effect in ADP characterization by this method, using Ge as the demonstration system. It is found that the ADP mechanism and the thermoelastic effect have comparable contributions to CAP generation in Ge. Due to the different dependences on pump photon energies, the roles of these two mechanisms were assessed by varying pump wavelengths, based on which the ADP coupling constant of Ge was obtained. The analysis reveals that the carrier diffusion has a considerable impact on the shape of the CAP wave packet and must be processed cautiously for the ADP characterization for Ge.

URL[Source Record]
Indexed By
SCI ; EI
Language
English
SUSTech Authorship
First ; Corresponding
Funding Project
Guangdong Basic and Applied Basic Research Foundation[
WOS Research Area
Materials Science ; Physics
WOS Subject
Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter
WOS Accession No
WOS:000874758600005
Publisher
EI Accession Number
20223712731152
EI Keywords
Acoustic Spectroscopy ; Deformation ; Phonons
ESI Classification Code
Acoustic Properties Of Materials:751.2
ESI Research Field
PHYSICS
Scopus EID
2-s2.0-85137652813
Data Source
Scopus
Citation statistics
Cited Times [WOS]:1
Document TypeJournal Article
Identifierhttp://kc.sustech.edu.cn/handle/2SGJ60CL/402395
DepartmentDepartment of Mechanical and Energy Engineering
Affiliation
1.Department of Mechanical and Energy Engineering,Southern University of Science and Technology,Shenzhen,518055,China
2.School of Microelectronics,Shenzhen Institute of Information Technology,Shenzhen,518172,China
3.State Key Laboratory on Tunable Laser Technology,School of Electronics and Information Engineering,Harbin Institute of Technology,Shenzhen,518055,China
4.Shenzhen JL Computational Science and Applied Research Institute,Shenzhen,518131,China
5.Beijing Computational Science Research Center,Beijing,100193,China
6.Key Laboratory of Energy Conversion and Storage Technologies,Ministry of Education,Shenzhen,518055,China
First Author AffilicationDepartment of Mechanical and Energy Engineering
Corresponding Author AffilicationDepartment of Mechanical and Energy Engineering
First Author's First AffilicationDepartment of Mechanical and Energy Engineering
Recommended Citation
GB/T 7714
Li,Long,He,Feng,Zhao,Xu,et al. Effect of diffusion on acoustic deformation potential characterization through coherent acoustic phonon dynamics[J]. Physical Review B,2022,106(6):L060304.
APA
Li,Long,He,Feng,Zhao,Xu,Tong,Zhen,&Guo,Liang.(2022).Effect of diffusion on acoustic deformation potential characterization through coherent acoustic phonon dynamics.Physical Review B,106(6),L060304.
MLA
Li,Long,et al."Effect of diffusion on acoustic deformation potential characterization through coherent acoustic phonon dynamics".Physical Review B 106.6(2022):L060304.
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2022-Effect of diffu(726KB) Restricted Access--
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