High-field Shubnikov-de Haas oscillations in the topological insulator Bi2Te2Se

被引：158
|
作者：
Xiong, Jun [1 ]
Luo, Yongkang [1 ]
Khoo, YueHaw [1 ]
Jia, Shuang [2 ]
Cava, R. J. [2 ]
Ong, N. P. [1 ]
机构：
[1] Princeton Univ, Dept Phys, Princeton, NJ 08544 USA
[2] Princeton Univ, Dept Chem, Princeton, NJ 08544 USA
来源：
PHYSICAL REVIEW B | 2012年 / 86卷 / 04期
基金：
美国国家科学基金会;
关键词：
QUANTUM OSCILLATIONS; SURFACE-STATES; PHASE;
D O I：
10.1103/PhysRevB.86.045314
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We report measurements of the surface Shubnikov-de Haas oscillations (SdH) on crystals of the topological insulator Bi2Te2Se. In crystals with large bulk resistivity (similar to 4 Omega cm at 4 K), we observe similar to 15 surface SdH oscillations (to the n = 1 Landau level) in magnetic fields B up to 45 T. Extrapolating to the limit 1/B -> 0, we confirm the 1/2-shift expected from a Dirac spectrum. The results are consistent with a very small surface Lande g factor.
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页数：6
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