Superconductivity induced in iron telluride films by low-temperature oxygen incorporation

被引：44

作者：

Nie, Y. F. ^{[1
,2
]}

Telesca, D. ^{[1
]}

Budnick, J. I. ^{[1
,2
]}

Sinkovic, B. ^{[1
]}

Wells, B. O. ^{[1
,2
]}

机构：

[1] Univ Connecticut, Dept Phys, Storrs, CT 06269 USA

[2] Univ Connecticut, Inst Mat Sci, Storrs, CT 06269 USA

来源：

PHYSICAL REVIEW B | 2010年 / 82卷 / 02期

关键词：

ABSORPTION; PRESSURE;

D O I：

10.1103/PhysRevB.82.020508

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report superconductivity induced in films of the nonsuperconducting, antiferromagnetic parent material FeTe by low-temperature oxygen incorporation in a reversible manner. X-ray absorption shows that oxygen incorporation changes the nominal Fe valence state from 2+ in the nonsuperconducting state to mainly 3+ in the superconducting state. Thus superconductivity in O-doped FeTe occurs in a quite different charge and strain state than the more common FeTe(1-x)Se(x). This work also suggests a convenient path for conducting doping experiments in situ with many measurement techniques.

引用

页数：4

共 23 条

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