Electric-field induced low temperature superconducting granular balls

被引：20

作者：

Tao, R ^{[1
]}

Xu, X ^{[1
]}

Lan, YC ^{[1
]}

Shiroyanagi, Y ^{[1
]}

机构：

[1] Temple Univ, Dept Phys, Philadelphia, PA 19122 USA

来源：

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 2002年 / 377卷 / 03期

基金：

美国国家科学基金会;

关键词：

superconducting ball; surface energy; electric field screening length; coherence length;

D O I：

10.1016/S0921-4534(01)01287-4

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

In a strong electric field E, low temperature superconducting particles of mum size in liquid helium bind to form macroscopic balls and layers clinging to electrodes. There are two critical fields, E-c1 < E-c2. The formation of balls and layers occurs only for E greater than or equal to E-c1. The balls are stable if E-c1 < E < E-c2. For E > E-c2, the balls break and the pieces fly to the electrodes. The phenomenon results from the interaction between Cooper pairs and a strong electric field. A positive surface energy associated with the induced surface charge on superconductors is a possible explanation. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：357 / 361

页数：5