Accessing the transport properties of graphene and its multilayers at high carrier density

被引：290

作者：

Ye, Jianting ^{[1
,2
,3
]}

Craciun, Monica F. ^{[4
]}

Koshino, Mikito ^{[6
]}

Russo, Saverio ^{[5
]}

Inoue, Seiji ^{[1
]}

Yuan, Hongtao ^{[1
,2
,3
]}

Shimotani, Hidekazu ^{[1
,2
,3
]}

Morpurgo, Alberto F. ^{[7
,8
]}

Iwasa, Yoshihiro ^{[2
,3
,9
]}

机构：

[1] Tohoku Univ, Inst Mat Res, Sendai, Miyagi 9808577, Japan

[2] Univ Tokyo, Quantum Phase Elect Ctr, Bunkyo Ku, Tokyo 1138656, Japan

[3] Univ Tokyo, Dept Appl Phys, Bunkyo Ku, Tokyo 1138656, Japan

[4] Univ Exeter, Sch Engn, Ctr Graphene Sci, Exeter EX4 4QL, Devon, England

[5] Univ Exeter, Sch Phys, Ctr Graphene Sci, Exeter EX4 4QL, Devon, England

[6] Tokyo Inst Technol, Dept Phys, Meguro Ku, Tokyo 1528551, Japan

[7] Univ Geneva, Dept Condensed Matter Phys, CH-1211 Geneva, Switzerland

[8] Univ Geneva, Appl Phys Grp, CH-1211 Geneva, Switzerland

[9] RIKEN, Correlated Elect Res Grp, Wako, Saitama 3510198, Japan

来源：

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA | 2011年 / 108卷 / 32期

基金：

日本科学技术振兴机构; 瑞士国家科学基金会;

关键词：

FIELD-EFFECT TRANSISTORS; ELECTRON-SCATTERING; SUPERCONDUCTIVITY; CAPACITANCE; LIQUID; FILM;

D O I：

10.1073/pnas.1018388108

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 present a comparative study of high carrier density transport in mono-, bi-, and trilayer graphene using electric double-layer transistors to continuously tune the carrier density up to values exceeding 10(14) cm(-2). Whereas in monolayer the conductivity saturates, in bi- and trilayer filling of the higher-energy bands is observed to cause a nonmonotonic behavior of the conductivity and a large increase in the quantum capacitance. These systematic trends not only show how the intrinsic high-density transport properties of graphene can be accessed by field effect, but also demonstrate the robustness of ion-gated graphene, which is crucial for possible future applications.

引用

页码：13002 / 13006

页数：5

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