Effect of O-and Mn-Doping on Superconductivity in FeTe0.5Se0.5 Superconductor

被引：3

作者：

Thakur, Gohil S. ^{[1
]}

Haque, Zeba ^{[1
]}

Neha, Prakriti ^{[2
]}

Gupta, Laxmi C. ^{[1
]}

Patnaik, Satyabrata ^{[2
]}

Ganguli, Ashok K. ^{[1
]}

机构：

[1] Indian Inst Technol, Dept Chem, New Delhi 110016, India

[2] Jawaharlal Nehru Univ, Sch Phys Sci, New Delhi 110052, India

来源：

ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE | 2014年 / 640卷 / 06期

关键词：

FeTe; 0; Se; 5INF; Chalcogen height dependence; Superconductors; Oxygen doping; Mn doping; PHASE-DIAGRAM;

D O I：

10.1002/zaac.201300657

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The effect of oxygen substitution at the selenium site and manganese substitution at the iron site in FeTe0.5Se0.5 superconductor was investigated. It was found that upon partial O substitution, T-c marginally decreases as seen in both resistivity and magnetization experiments. T-c decreases even by a small amount of oxygen concentration (as low as 1%). This observation is in contrast against an earlier work on Fe(Te/Se) samples,1 wherein T-c as well as superconducting volume fraction were reported to increase in the samples annealed in air. Mn-doping leads to a decrease in T-c in FeTe0.5Se0.5, which one would expect considering pair-breaking due to Mn2+-ions.

引用

页码：1159 / 1163

页数：5

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