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

被引：4
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
收藏
页码：1159 / 1163
页数：5
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