3 SIGNATURES OF PHASE-COHERENT ANDREEV REFLECTION

被引：114

作者：

MARMORKOS, IK ^{[1
]}

BEENAKKER, CWJ ^{[1
]}

JALABERT, RA ^{[1
]}

机构：

[1] CEA SACLAY, SERV PHYS ETAT CONDENSE, F-91191 GIF SUR YVETTE, FRANCE

来源：

PHYSICAL REVIEW B | 1993年 / 48卷 / 04期

关键词：

D O I：

10.1103/PhysRevB.48.2811

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

An efficient numerical scheme is developed to compute the differential conductance G(NS) of a disordered normal-metal-superconductor (NS) junction at voltages V and magnetic fields B. A sharp peak is found in G(NS) around V, B = 0 in the case of a resistive NS interface, as observed experimentally and confirming the theory of ''reflectionless tunneling.'' An ideal interface shows a conductance dip, due to an enhanced weak-localization effect. Finally, it is demonstrated that time-reversal-symmetry breaking does not reduce the ''universal conductance fluctuations'' in G(NS) by a factor of 2.

引用

页码：2811 / 2814

页数：4

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