期刊
PHYSICAL REVIEW B
卷 105, 期 4, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.105.045134
关键词
-
资金
- CSIR
- SERB [CRG/2018/002197]
- DST India grant [DST/INT/SWD/VR/P-18/2019]
- Swedish Research Council (VR) [2016-03365, 2018-07070]
- Knut and Alice Wallenberg Foundation through the Wallenberg Academy Fellows program [KAW 2020.0196]
- Electron Microscopy Laboratory at Linkoping University
- Swedish Government Strategic Research Area in Materials Science on Functional Materials at Linkoping University [2009 00971]
- Swedish Energy Agency [46519-1]
- Swedish Foundation for Strategic Research (SSF) [RIF 14-0074]
- Swedish Research Council [2018-07070] Funding Source: Swedish Research Council
In this study, we investigate the structure, vibrational properties, and weak anti-localization-induced quantum correction to magnetoconductivity in single-crystal Bi2GeTe4. Our results reveal the presence of a single Dirac cone corresponding to topological surface states in Bi2GeTe4, and demonstrate the interaction between electrons of the topological state and phonons involving the vibrations of Bi-Te.
We report structure, vibrational properties, and weak antilocalization-induced quantum correction to magnetoconductivity in single-crystal Bi2GeTe4. Surface band-structure calculations show a single Dirac cone corresponding to topological surface states in Bi2GeTe4. An estimated phase coherence length, l phi similar to 143 nm and prefactor alpha similar to-1.54 from Hikami-Larkin-Nagaoka fitting of magnetoconductivity describe the quantum correction to conductivity. An anomalous temperature dependence of A1g Raman modes confirms enhanced electron-phonon interactions. Our results establish that electrons of the topological state can interact with the phonons involving the vibrations of Bi-Te in Bi2GeTe4.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据