Ultrahigh electron mobility in suspended graphene

被引：6637

作者：

Bolotin, K. I. ^{[1
]}

Sikes, K. J. ^{[2
]}

Jiang, Z. ^{[1
,4
]}

Klima, M. ^{[3
]}

Fudenberg, G. ^{[1
]}

Hone, J. ^{[3
]}

Kim, P. ^{[1
]}

Stormer, H. L. ^{[1
,2
,5
]}

机构：

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

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

[3] Columbia Univ, Dept Mech Engn, New York, NY 10027 USA

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

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

来源：

SOLID STATE COMMUNICATIONS | 2008年 / 146卷 / 9-10期

基金：

美国国家科学基金会;

关键词：

graphene; nanofabrication; electronic transport;

D O I：

10.1016/j.ssc.2008.02.024

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We have achieved mobilities in excess of 200,000 cm(2) V(-1)s(-1) at electron densities of similar to 2x10(11) cm(-2) by suspending single layer graphene. Suspension similar to 150 nin above a Si/SiO2 gate electrode and electrical contacts to the graphene was achieved by a combination of electron beam lithography and etching. The specimens were cleaned in situ by employing current-induced heating, directly resulting in a significant improvement of electrical transport. Concomitant with large mobility enhancement, the widths of the characteristic Dirac peaks are reduced by a factor of 10 compared to traditional, nonsuspended devices. This advance should allow for accessing the intrinsic transport properties of graphene. (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：351 / 355

页数：5

共 24 条

[21] High-resolution scanning tunneling microscopy imaging of mesoscopic graphene sheets on an insulating surface
Stolyarova, Elena
Rim, Kwang Taeg
Ryu, Sunmin
Maultzsch, Janina
Kim, Philip
Brus, Louis E.
Heinz, Tony F.
Hybertsen, Mark S.
Flynn, George W.
[J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2007, 104 (22) : 9209 - 9212
[22] Measurement of scattering rate and minimum conductivity in graphene
Tan, Y. -W.
Zhang, Y.
Bolotin, K.
Zhao, Y.
Adam, S.
Hwang, E. H.
Das Sarma, S.
Stormer, H. L.
Kim, P.
[J]. PHYSICAL REVIEW LETTERS, 2007, 99 (24)
[23] Experimental observation of the quantum Hall effect and Berry's phase in graphene
Zhang, YB
Tan, YW
Stormer, HL
Kim, P
[J]. NATURE, 2005, 438 (7065) : 201 - 204
[24] WE USE 6 S LONG OXYG

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