Ba1-xKxFe2As2相图中的磁弹性耦合
超导电性
2011-06-30 v1
摘要
我们报告了对Ba1-xKxFe2As2中结构和磁转变耦合的高分辨率中子衍射研究。四方-正交和反铁磁转变被钾掺杂抑制,在x <~ 0.3时降至零。然而,与Ba(Fe1-xCox)2As2不同,这两个转变在整个相图中是一级且重合的,两个序参量之间存在双二次耦合。相图被细化,显示超导性在x = 0.133时出现,所有三个相共存直到x >~ 0.24。
引用
@article{arxiv.1102.1933,
title = {Magnetoelastic Coupling in the Phase Diagram of Ba1-xKxFe2As2},
author = {Sevda Avci and Omar Chmaissem and Eugene A. Goremychkin and Stephan Rosenkranz and John-Paul Castellan and Duck-Young Chung and Ilya S. Todorov and John A. Schlueter and Helmut Claus and Mercouri G. Kanatzidis and Aziz Daoud-Aladine and Dmitry Khalyavin and Raymond Osborn},
journal= {arXiv preprint arXiv:1102.1933},
year = {2011}
}
备注
4 pages, 5 figures