Ultra-low-temperature cooling of two-dimensional electron gas

被引：17

作者：

Xia, JS

Adams, ED

Shvarts, V

Pan, W

Stormer, HL

Tsui, DC

机构：

[1] NHMFL, Gainesville, FL 32611 USA

[2] Univ Florida, Dept Phys, Ctr Ultralow Temp Res, Natl High Magnet Field Lab, Gainesville, FL 32611 USA

[3] NHMFL, Princeton, NJ 08544 USA

[4] Princeton Univ, Princeton, NJ 08544 USA

[5] Bell Labs, Murray Hill, NJ 07974 USA

[6] Columbia Univ, New York, NY 10022 USA

来源：

PHYSICA B | 2000年 / 280卷 / 1-4期

关键词：

fractional quantum Hall effect; heat exchanger; ultra-low-temperature cooling;

D O I：

10.1016/S0921-4526(99)01843-8

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

A new design has been used for cooling GaAs/AlxGa1-xAs sample to ultra-low-temperatures. The sample, with electrical contacts directly soldered to the sintered silver powder heat exchangers, was immersed in liquid He-3, which was cooled by a PrNI5 nuclear refrigerator. The data analysis shows that the two-dimensional electron gas (2DEG) was cooled to 4.0 mK at the refrigerator base temperature T-b of 2.0 mK. The design with heat exchanger cooling is applicable to any ultra-low-temperature transport measurements of 2DEG system. (C) 2000 Published by Elsevier Science B.V. All rights reserved.

引用

页码：491 / 492

页数：2

共 3 条

[1] ULTRALOW-TEMPERATURE BEHAVIOR OF THE NU=5/2 FRACTIONAL QUANTUM HALL-EFFECT [J].