Cyclotron resonance of electrons and holes in graphene monolayers

被引：17
作者：
Chuang, Kai-Chieh [1 ]
Deacon, Russell S. [1 ]
Nicholas, Robin J. [1 ]
Novoselov, Kostya S. [2 ]
Geim, Andre K. [2 ]
机构：
[1] Univ Oxford, Dept Phys, Clarendon Lab, Oxford OX1 3PU, England
[2] Univ Manchester, Manchester Ctr Mesosci & Nanotechnol, Manchester M19 9PL, Lancs, England
来源：
PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES | 2008年 / 366卷 / 1863期
基金：
英国工程与自然科学研究理事会;
关键词：
graphene; cyclotron resonance; Fermi velocity;
D O I：
10.1098/rsta.2007.2158
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 studies of cyclotron resonance in monolayer graphene. Cyclotron resonances are detected by observing changes in the photoconductive response of the sample. An electron velocity at the Dirac point of 1.093x10(6) ms(-1) is obtained, which is the fastest velocity recorded for all known carbon materials. In addition, a significant asymmetry exists between band structure for electrons and holes, which gives rise to a 5% difference between the velocities at energies of 125 meV away from the Dirac point.
引用
收藏
页码：237 / 243
页数：7
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