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From linear magnetoresistance to parabolic magnetoresistance in Cu and Cr-doped topological insulator Bi2Se3 films
Li, Mingze; Wang, Zhenhua; Yang, Liang; Gao, Xuan P. A.; Zhang, Zhidong
2019-05-01
Source PublicationJOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
ISSN0022-3697
Volume128Pages:331-336
AbstractWe report on the magnetotransport properties of Cu- and Cr-doped topological insulator Bi2Se3 films grown on silicon (100) substrate by chemical vapor deposition. Upon doping of non-magnetic Cu, Bi2Se3 film's carrier density is reduced and the magnetoresistance changes from a strong positive parabolic magnetoresistance to a linear magnetoresistance. This linear magnetoresistance is similar to the linear magnetoresistance in other gapless topological states of matter and has a strong temperature dependence. In contrast, the magnetoresistance of Crdoped Bi2Se3 films remains to be parabolic and becomes temperature independent upon increased Cr-doping. These results suggest that the absence of linear magnetoresistance in Cr-doped Bi2Se3 is related to the magnetic dopants that induce time reversal symmetry breaking and surface states gap opening.
KeywordTopological insulator Bismuth selenide Magnetoresistance Magnetic doping Thin film
Indexed BySCI
Language英语
WOS IDWOS:000472693100037
PublisherPERGAMON-ELSEVIER SCIENCE LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/81115
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
Li, Mingze,Wang, Zhenhua,Yang, Liang,et al. From linear magnetoresistance to parabolic magnetoresistance in Cu and Cr-doped topological insulator Bi2Se3 films[J]. JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS,2019,128:331-336.
APA Li, Mingze,Wang, Zhenhua,Yang, Liang,Gao, Xuan P. A.,&Zhang, Zhidong.(2019).From linear magnetoresistance to parabolic magnetoresistance in Cu and Cr-doped topological insulator Bi2Se3 films.JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS,128,331-336.
MLA Li, Mingze,et al."From linear magnetoresistance to parabolic magnetoresistance in Cu and Cr-doped topological insulator Bi2Se3 films".JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS 128(2019):331-336.
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