Nanoscale Proximity Effect in the High-Temperature Superconductor Bi2Sr2CaCu2O8+δ Using a Scanning Tunneling Microscope

被引：30

作者：

Parker, Colin V. ^{[1
,3
]}

Pushp, Aakash ^{[1
,2
,3
]}

Pasupathy, Abhay N. ^{[1
,3
]}

Gomes, Kenjiro K. ^{[1
,3
]}

Wen, Jinsheng ^{[4
]}

Xu, Zhijun ^{[4
]}

Ono, Shimpei ^{[5
]}

Gu, Genda ^{[4
]}

Yazdani, Ali ^{[1
,3
]}

机构：

[1] Princeton Univ, Joseph Henry Labs, Princeton, NJ 08544 USA

[2] Univ Illinois, Dept Phys, Urbana, IL 61801 USA

[3] Princeton Univ, Dept Phys, Princeton, NJ 08544 USA

[4] Brookhaven Natl Lab, Upton, NY 11973 USA

[5] Cent Res Inst Elect Power Ind, Tokyo 2018511, Japan

来源：

PHYSICAL REVIEW LETTERS | 2010年 / 104卷 / 11期

基金：

美国国家科学基金会;

关键词：

ATOMIC-SCALE;

D O I：

10.1103/PhysRevLett.104.117001

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

High-temperature cuprate superconductors exhibit extremely local nanoscale phenomena and strong sensitivity to doping. While other experiments have looked at nanoscale interfaces between layers of different dopings, we focus on the interplay between naturally inhomogeneous nanoscale regions. Using scanning tunneling microscopy to carefully track the same region of the sample as a function of temperature, we show that regions with weak superconductivity can persist to elevated temperatures if bordered by regions of strong superconductivity. This suggests that it may be possible to increase the maximum possible transition temperature by controlling the distribution of dopants.

引用

页数：4

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