Disorder-induced linear magnetoresistance in Sr-doped Bi2Se3 thin films

Jiayuan Hu; Wenxiang Jiang; Guohua Wang; Yunlong Li; Jiangtao Wang; Jinlong Jiao; Qi Lu; Chenhang Xu; Wentao Zhang; Jie Ma; Dong Qian

Disorder-induced linear magnetoresistance in Sr-doped Bi2Se3 thin films

Superconductivity 2022-02-21 v2 Strongly Correlated Electrons

Authors: Jiayuan Hu , Wenxiang Jiang , Guohua Wang , Yunlong Li , Jiangtao Wang , Jinlong Jiao , Qi Lu , Chenhang Xu , Wentao Zhang , Jie Ma , Dong Qian

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Abstract

Sr-doped Bi2Se3 thin films was known as a potential candidate of topological superconductor. The magnetoresistance (MR) of SrxBi2Se3 films with various doping concentrations x were found to be dominated by weak antilocalization (WAL) at low magnetic fields, whereas the classical MR, which originally dominated the MR, was almost completely suppressed. In contrast, the MR of all samples has been observed to be dominated by linear magnetoresistance (LMR) at high magnetic fields. The LMR, having the linear dependence on carrier mobility, can be successfully explained by the Parish-Littlewood model. This indicates that LMR originates from mobility fluctuation induced by Sr dopant atoms in doped Bi2Se3 films.

Keywords

linear magnetoresistance sr-doped bi2se3 weak antilocalization parish-littlewood model mobility fluctuation topological superconductor

Cite

@article{arxiv.2202.08110,
  title  = {Disorder-induced linear magnetoresistance in Sr-doped Bi2Se3 thin films},
  author = {Jiayuan Hu and Wenxiang Jiang and Guohua Wang and Yunlong Li and Jiangtao Wang and Jinlong Jiao and Qi Lu and Chenhang Xu and Wentao Zhang and Jie Ma and Dong Qian},
  journal= {arXiv preprint arXiv:2202.08110},
  year   = {2022}
}

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Disorder-induced linear magnetoresistance in Sr-doped Bi2Se3 thin films

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