Cyclotron resonance in bilayer graphene

被引：175

作者：

Henriksen, E. A. ^{[1
]}

Jiang, Z. ^{[1
,2
]}

Tung, L. -C. ^{[2
]}

Schwartz, M. E. ^{[1
]}

Takita, M. ^{[1
]}

Wang, Y. -J. ^{[2
]}

Kim, P. ^{[1
]}

Stormer, H. L. ^{[1
,3
,4
]}

机构：

[1] Columbia Univ, Dept Phys, New York, NY 10027 USA

[2] Natl High Magnet Field Lab, Tallahassee, FL 32310 USA

[3] Columbia Univ, Dept Appl Phys & Appl Math, New York, NY 10027 USA

[4] Alcatel Lucent, Bell Labs, Murray Hill, NJ 07974 USA

来源：

PHYSICAL REVIEW LETTERS | 2008年 / 100卷 / 08期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevLett.100.087403

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present the first measurements of cyclotron resonance of electrons and holes in bilayer graphene. In magnetic fields up to B=18 T, we observe four distinct intraband transitions in both the conduction and valence bands. The transition energies are roughly linear in B between the lowest Landau levels, whereas they follow root B for the higher transitions. This highly unusual behavior represents a change from a parabolic to a linear energy dispersion. The density of states derived from our data generally agrees with the existing lowest order tight binding calculation for bilayer graphene. However, in comparing data to theory, a single set of fitting parameters fails to describe the experimental results.

引用

页数：4

共 22 条

[1] Optical and magneto-optical far-infrared properties of bilayer graphene [J].