Two-dimensional electron and hole gases at the surface of graphite

被引：145

作者：

Morozov, SV ^{[1
]}

Novoselov, KS

Schedin, F

Jiang, D

Firsov, AA

Geim, AK

机构：

[1] Univ Manchester, Dept Phys, Manchester M13 9PL, Lancs, England

[2] Inst Microelect Technol, Chernogolovka 142432, Russia

来源：

PHYSICAL REVIEW B | 2005年 / 72卷 / 20期

关键词：

D O I：

10.1103/PhysRevB.72.201401

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report two-dimensional (2D) electron and hole gases induced at the surface of graphite by the electric field effect. The 2D gases reside within a few near-surface atomic layers and exhibit mobilities up to 15 000 and 60 000 cm(2)/V s at room and liquid-helium temperatures, respectively. The mobilities imply ballistic transport on mu m scale. Pronounced Shubnikov-de Haas oscillations reveal the existence of two types of charge carries in both electron and hole gases.

引用

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