中文

FeSe中M点对称衍生配对的分类

超导电性 2018-07-11 v2

摘要

利用FeSe晶体对称性的约束以及实验观测到的现象学,我们分析了插层与单层FeSe化合物中超导序参量可能的配对对称性。该分析得出三种可能的配对对称态——s波、d波和螺旋p波。尽管配对对称性不同,这些态均是完全带隙的,且能隙最小值位于正常态费米面之上,与Y. Zhang等人的光发射数据一致。该分析为这些态各自的可能配对机制提供了额外见解,突出了重整化排斥型轨道内Hubbard UU与轨道间 UU' 的有害作用,以及有效低能哈密顿量中配对跳跃 JJ'、洪德 JJ 项和自旋轨道耦合的有益作用。

关键词

引用

@article{arxiv.1804.08056,
  title  = {Classification of Symmetry Derived Pairing at M Point in FeSe},
  author = {P. Myles Eugenio and Oskar Vafek},
  journal= {arXiv preprint arXiv:1804.08056},
  year   = {2018}
}

备注

17 pages, 13 figures. Minor corrections in order to match PRB publication, this includes: removed erroneous citation, added citation, minor corrections to wordings, and added paragraph. Further, the author corrected the pairing symmetry of the inter-band spin-triplet (w/ d-vector out of plane) pairs in Table III. This was a labeling mistake and has no impact on the rest of the paper