GIANT CONDUCTANCE OSCILLATIONS IN SUPERCONDUCTING PHASE GRADIOMETERS

被引：11

作者：

COOK, PMA ^{[1
]}

HUI, VC ^{[1
]}

LAMBERT, CJ ^{[1
]}

机构：

[1] DRA,CTR THEORET STUDIES,MALVERN WR14 3PS,WORCS,ENGLAND

来源：

EUROPHYSICS LETTERS | 1995年 / 30卷 / 06期

关键词：

D O I：

10.1209/0295-5075/30/6/007

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A new class of superconductivity-enhanced, quasi-particle interference effects (SEQUINs) is suggested, based on interference from the order parameter phase gradient of a single superconductor (S) in contact with a normal metallic lead (N) of finite width M. By solving the Bogoliubov-de Gennes equation in two dimensions, it is predicted that the electrical conductance will oscillate as the phase gradient v at 90 degrees to the interface is increased, with period ($) over bar v = 2 pi/M. This effect is enhanced by the presence of a Schottky barrier at the interface and is also present in N-S-N structures. The size of the effect scales with the number of open channels and can be much greater than e(2)/h.

引用

页码：355 / 360

页数：6