铁基超导体反铁磁母体化合物中的准粒子干涉
超导电性
2011-02-10 v1
摘要
最近报道的欠掺杂Ca(Fe{1-x}Co{x})_2As{2}中的准粒子干涉成像显示出显著的C{2}不对称性，这被解释为存在电子向列相的证据，该相具有单向电子能带，主要沿该正交晶系材料的b轴色散。另一方面，更近期的未孪晶样品输运测量显示，ab面内电阻率接近各向同性，沿a轴（而非b轴）的电导率略高。我们表明，实际上这两组数据都与从头计算得到的费米面一致，该费米面明确地破缺了C_{4}对称性，但在两个方向上的费米速度相似。这完全调和了STM与输运实验结论之间看似矛盾的结果。
引用
@article{arxiv.1102.1930,
title = {Quasiparticle interference in antiferromagnetic parent compounds of Fe-based superconductors},
author = {I. I. Mazin and Simon A. J. Kimber and Dimitri N. Argyriou},
journal= {arXiv preprint arXiv:1102.1930},
year = {2011}
}
备注
A version of this work was posted (arXiv:1005.1761) as a comment on a Science paper entitled "Nematic Electronic Structure in the Parent State of the Iron-Based Superconductor Ca(Fe1-xCox)2As2". The comment was rejected by Science on account of it being posted on the ArXiv. This is a version published in PRB as a research paper