中文

铁基超导体中磁驱动的向列序抑制

超导电性 2015-02-18 v2

摘要

铁基材料超导理论需要理解正常态的相图。在这些化合物中,当通过掺杂、压力或原子无序抑制条状自旋密度波序时,超导性出现。这种磁序通常被向列序抢先,其起源尚未解决。一种情景是向列序由铁3d电子的轨道序驱动,进而触发条状SDW序。另一种是磁相互作用产生自旋向列相,然后诱导轨道序。在本文中,我们报告了通过中子粉末衍射在Ba1-xNaxFe2As2中观察到接近SDW序抑制时的额外四重对称相,这与磁驱动向列序模型的预测一致。

关键词

引用

@article{arxiv.1303.2647,
  title  = {Magnetically-Driven Suppression of Nematic Order in an Iron-Based Superconductor},
  author = {Sevda Avci and Omar Chmaissem and Stephan Rosenkranz and Jared M. Allred and Ilya Eremin and Andrey V. Chubukov and Duck-Young Chung and Mercouri G. Kanatzidis and John-Paul Castellan and John A. Schlueter and Helmut Claus and Dmitry D. Khalyavin and Pascal Manuel and Aziz Daoud-Aladine and Ray Osborn},
  journal= {arXiv preprint arXiv:1303.2647},
  year   = {2015}
}

备注

Article (6 pages, 3 figures) + Supplementary Information (5 pages, 3 figures)