Surface Electrical Conductivity Measurement System with Micro-Four-Point Probes at Sub-Kelvin Temperature under High Magnetic Field in Ultrahigh Vacuum

被引：25

作者：

Yamada, Manabu ^{[1
]}

Hirahara, Toru ^{[1
]}

Hobara, Rei ^{[1
]}

Hasegawa, Shuji ^{[1
]}

Mizuno, Hiroyuki ^{[2
]}

Miyatake, Yutaka ^{[2
]}

Nagamura, Toshihiko ^{[2
]}

机构：

[1] Univ Tokyo, Grad Sch Sci, Dept Phys, Bunkyo Ku, Hongo 7-3-1, Tokyo 1130033, Japan

[2] UNISOKU Co Ltd, Hirakata, Osaka 5730131, Japan

来源：

E-JOURNAL OF SURFACE SCIENCE AND NANOTECHNOLOGY | 2012年 / 10卷

基金：

日本学术振兴会;

关键词：

Surface-state superconductivity; Micro-four-point probe; Surface electrical transport; Dual configuration method; In; Si(111);

D O I：

10.1380/ejssnt.2012.400

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

We have constructed an ultrahigh vacuum system in which surface conductivity is measured in situ by micro four -point probe method down to 0.8 K, combined with conventional surface preparation/analysis capability. In order to reduce the data scattering due to changes of the probe spacing, we have employed a dual configuration method in which the combinations with current/voltage probes are switched. The surface-state superconductivity of Si(111)-\/77 x '0-In surface superstructure was confirmed with the critical temperature of 2.8 K. The critical magnetic field was 0.3-0.4 T in the surface-normal direction.

引用

页码：400 / 405

页数：6

共 2 条

[1] Surface Electrical Conductivity Measurement System with Micro-Four-Point Probes at Sub-Kelvin Temperature under High Magnetic Field in Ultrahigh Vacuum
Lee, Soyeon
Oshima, Yoshifumi
Sawada, Hidetaka
Hosokawa, Fumio
Okunishi, Eiji
Kaneyama, Toshikatsu
Kondo, Yukihito
Tanishiro, Yasumasa
Takayanagi, Kunio
[J]. E-JOURNAL OF SURFACE SCIENCE AND NANOTECHNOLOGY, 2012, 10 : 454 - 458
[2] Ultrahigh vacuum, variable temperature, dual scanning tunneling microscope system operating under high magnetic field
Cai, Weiwei
Pang, Fei
Wang, Jian
Liu, Hui
Liang, X. J.
Xue, Q. K.
Chen, D. M.
[J]. REVIEW OF SCIENTIFIC INSTRUMENTS, 2007, 78 (06):

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