Anomalous proximity effect in gold coated (110) YBa2Cu3O7-δ films:: Penetration of the Andreev bound states -: art. no. 157001

被引：12

作者：

Asulin, I ^{[1
]}

Sharoni, A

Yulli, O

Koren, G

Millo, O

机构：

[1] Hebrew Univ Jerusalem, Racah Inst Phys, IL-91904 Jerusalem, Israel

[2] Technion Israel Inst Technol, Dept Phys, IL-32000 Haifa, Israel

来源：

PHYSICAL REVIEW LETTERS | 2004年 / 93卷 / 15期

基金：

以色列科学基金会;

关键词：

D O I：

10.1103/PhysRevLett.93.157001

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Scanning tunneling spectroscopy of (110)YBa2Cu3O7-delta/Au bilayers reveal a proximity effect markedly different from the conventional one. While proximity-induced mini-gaps rarely appear in the Au layer, the Andreev bound states clearly penetrate into the metal. Zero bias conductance peaks are measured on Au layers thinner than 7 nm with a magnitude similar to those detected on the bare superconductor films. The peaks then decay abruptly with Au thickness and disappear above 10 nm. This length is shorter than the normal coherence length and corresponds to the (ballistic) mean free path.

引用

页码：157001 / 1

页数：4

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