Crossover between Weak Antilocalization and Weak Localization of Bulk States in Ultrathin Bi2Se3 Films

被引：55

作者：

Wang, Huichao ^{[1
,2
]}

Liu, Haiwen ^{[1
,2
]}

Chang, Cui-Zu ^{[3
,4
]}

Zuo, Huakun ^{[5
]}

Zhao, Yanfei ^{[1
,2
]}

Sun, Yi ^{[1
,2
]}

Xia, Zhengcai ^{[5
]}

He, Ke ^{[2
,3
,4
]}

Ma, Xucun ^{[2
,3
,4
]}

Xie, X. C. ^{[1
,2
]}

Xue, Qi-Kun ^{[2
,3
]}

Wang, Jian ^{[1
,2
]}

机构：

[1] Peking Univ, Sch Phys, Int Ctr Quantum Mat, Beijing 100871, Peoples R China

[2] Collaborat Innovat Ctr Quantum Matter, Beijing, Peoples R China

[3] Tsinghua Univ, Dept Phys, Key Lab Low Dimens Quantum Phys, Beijing 100084, Peoples R China

[4] Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China

[5] Huazhong Univ Sci & Technol, Wuhan Natl High Magnet Field Ctr, Wuhan 430074, Peoples R China

来源：

SCIENTIFIC REPORTS | 2014年 / 4卷

基金：

中国国家自然科学基金;

关键词：

TRANSPORT; QUANTUM; MAGNETORESISTANCE; CONDUCTION;

D O I：

10.1038/srep05817

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

We report transport studies on the 5 nm thick Bi2Se3 topological insulator films which are grown viamolecular beam epitaxy technique. The angle-resolved photoemission spectroscopy data show that the Fermi level of the system lies in the bulk conduction band above the Dirac point, suggesting important contribution of bulk states to the transport results. In particular, the crossover from weak antilocalization to weak localization in the bulk states is observed in the parallel magnetic field measurements up to 50 Tesla. The measured magneto-resistance exhibits interesting anisotropy with respect to the orientation of parallel magnetic field B-// and the current I, signifying intrinsic spin-orbit coupling in the Bi2Se3 films. Our work directly shows the crossover of quantum interference effect in the bulk states from weak antilocalization to weak localization. It presents an important step toward a better understanding of the existing three-dimensional topological insulators and the potential applications of nano-scale topological insulator devices.

引用

页数：6

共 38 条

[1]

Altshuler B.L., 1982, QUANTUM THEORY SOLID

[2] Linear magnetoresistance in topological insulator thin films: Quantum phase coherence effects at high temperatures [J].

Assaf, B. A. ;

Cardinal, T. ;

Wei, P. ;

Katmis, F. ;

Moodera, J. S. ;

Heiman, D. .

APPLIED PHYSICS LETTERS, 2013, 102 (01)

[3] WEAK LOCALIZATION IN THIN-FILMS - A TIME-OF-FLIGHT EXPERIMENT WITH CONDUCTION ELECTRONS [J].

BERGMANN, G .

PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS, 1984, 107 (01) :1-58

[4] Adaptive selection of an incretin gene in Eurasian populations [J].

Chang, Chia Lin ;

Cai, James J. ;

Lo, Chiening ;

Amigo, Jorge ;

Park, Jae-Il ;

Hsu, Sheau Yu Teddy .

GENOME RESEARCH, 2011, 21 (01) :21-32

[5] Quantum Interference in Macroscopic Crystals of Nonmetallic Bi2Se3 [J].

Checkelsky, J. G. ;

Hor, Y. S. ;

Liu, M. -H. ;

Qu, D. -X. ;

Cava, R. J. ;

Ong, N. P. .

PHYSICAL REVIEW LETTERS, 2009, 103 (24)

[6] Gate-Voltage Control of Chemical Potential and Weak Antilocalization in Bi2Se3 [J].

Chen, J. ;

Qin, H. J. ;

Yang, F. ;

Liu, J. ;

Guan, T. ;

Qu, F. M. ;

Zhang, G. H. ;

Shi, J. R. ;

Xie, X. C. ;

Yang, C. L. ;

Wu, K. H. ;

Li, Y. Q. ;

Lu, L. .

PHYSICAL REVIEW LETTERS, 2010, 105 (17)

[7]

Dugaev V. K., 1984, Soviet Physics - JETP, V59, P1038

[8] Angular-dependent oscillations of the magnetoresistance in Bi2Se3 due to the three-dimensional bulk Fermi surface [J].

Eto, Kazuma ;

Ren, Zhi ;

Taskin, A. A. ;

Segawa, Kouji ;

Ando, Yoichi .

PHYSICAL REVIEW B, 2010, 81 (19)

[9] Catalyst-Free Growth of Millimeter-Long Topological Insulator Bi2Se3 Nanoribbons and the Observation of the π-Berry Phase [J].

Fang, L. ;

Jia, Y. ;

Miller, D. J. ;

Latimer, M. L. ;

Xiao, Z. L. ;

Welp, U. ;

Crabtree, G. W. ;

Kwok, W. -K. .

NANO LETTERS, 2012, 12 (12) :6164-6169

[10] Gate-controlled linear magnetoresistance in thin Bi2Se3 sheets [J].

Gao, B. F. ;

Gehring, P. ;

Burghard, M. ;

Kern, K. .

APPLIED PHYSICS LETTERS, 2012, 100 (21)

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