Superconductivity and local non-centrosymmetricity in crystal lattices
Superconductivity
2012-11-01 v1
Abstract
Symmetry of the crystal lattice can be a determining factor for the structure of Cooper pairs in unconventional superconductors. In this study we extend the discussion of superconductivity in non-centrosymmetric materials to the case when inversion symmetry is missing locally, but is present on a global level. Concretely, we investigate the staggered non-centrosymmetricity within a regular sublattice structure, in some analogy to the discussion of superconductivity in antiferromagnetic systems. Three crystal structures are analyzed in detail as illustrative examples for the extended classification of Cooper-pairing channels. One of the cases may be relevant for the class of iron-pnictide superconductors.
Keywords
Cite
@article{arxiv.1108.4694,
title = {Superconductivity and local non-centrosymmetricity in crystal lattices},
author = {Mark H. Fischer and Florian Loder and Manfred Sigrist},
journal= {arXiv preprint arXiv:1108.4694},
year = {2012}
}