Far-infrared cyclotron resonance and Faraday effect in Bi2Se3

被引：67

作者：

Sushkov, A. B. ^{[1
]}

Jenkins, G. S.

Schmadel, D. C.

Butch, N. P.

Paglione, J.

Drew, H. D.

机构：

[1] Univ Maryland, Mat Res Sci & Engn Ctr, College Pk, MD 20742 USA

来源：

PHYSICAL REVIEW B | 2010年 / 82卷 / 12期

基金：

美国国家科学基金会;

关键词：

SINGLE DIRAC CONE; TOPOLOGICAL INSULATORS; OPTICAL-PROPERTIES; CONDUCTION-BAND; CRYSTALS; TRANSPORT; SURFACE; SB2TE3; BI2TE3; HAAS;

D O I：

10.1103/PhysRevB.82.125110

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The complex Faraday angle and transmission for the topological insulator Bi2Se3 were measured in the far infrared in magnetic fields up to 8 T and analyzed in terms of a simple Drude-Lorentz magnetoplasma dielectric model. Bulk carriers dominate the optical response. The bulk carriers are electrons as we determined from the sign of the Faraday angle. We obtain the bulk band-edge cyclotron mass m(cb) = 0.16 +/- 0.01m(e) and free-electron concentration in the 10(17) range. Electron-phonon interaction effects were found to be weak.

引用

页数：5

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