Superconducting phase tuned sample-specific conductance fluctuations

被引：0
|
作者：
denHartog, SG
Kapteyn, CMA
vanWees, BJ
Klapwijk, TM
vanderGraaf, W
Borghs, G
机构：
[1] UNIV GRONINGEN,CTR MAT SCI,NL-9747 AG GRONINGEN,NETHERLANDS
[2] INTERUNIV MICROELECT CTR,B-3030 LOUVAIN,BELGIUM
来源：
PHYSICA B | 1996年 / 227卷 / 1-4期
关键词：
universal conductance fluctuations (UCF); superconductors; interferometers;
D O I：
10.1016/0921-4526(96)00406-1
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
We have studied sample-specific conductance fluctuations tuned by the phase difference between superconducting boundaries attached to a T-shaped two-dimensional electron gas. In low magnetic fields, oscillations due to phase-conjugated Andreev reflections were observed with an amplitude delta G(qp)similar or equal to 0.10e(2)/h. These oscillations were suppressed by a flux of approximately h/e through the interference region. For larger magnetic fields, superconducting-phase modulated sample-specific conductance fluctuations were found with an amplitude delta Gy(Delta phi)similar or equal to.0.005e(2)/h.
引用
收藏
页码：229 / 231
页数：3
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