Effects of As Doping in Tl0.4K0.4Fe2−ySe2 Superconductor View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

2012-09-05

AUTHORS

Guolin Feng, Lei Zhang, Chuanying Xi, Langsheng Ling, Wei Tong, Hui Liu, Hongyan Yu, Changjin Zhang, Yuheng Zhang

ABSTRACT

The effects of As doping on the superconductivity and magnetism in the Tl0.4K0.4Fe2−ySe2 superconductor are studied. We find that the As doping does not significantly change the occupancy at the Fe-site, meaning a certain amount of Fe ions changes its valence from 2+ to 3+. The superconductivity is gradually suppressed with increasing As doping. The magnetic measurements suggest that though the As doping does not destroy the antiferromagnetic order in the system, it induces an increase in the staggered magnetic moment. These results suggest that the Tl0.4K0.4Fe2−ySe2 system is a system with intrinsic phase separation. The change in the valence state of Fe could be a possible reason for the suppression of superconductivity. More... »

PAGES

352-358

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/s10909-012-0705-5

DOI

http://dx.doi.org/10.1007/s10909-012-0705-5

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1025070069


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