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Anisotropic vortex lattice structures in the FeSe superconductor | | Hsiang-Hsuan Hung
; Can-Li Song
; Xi Chen
; Xucun Ma
; Qi-kun Xue
; Congjun Wu
; | | Date: |
28 Sep 2011 | | Abstract: | In the recent work by Song et al. [Science 332, 1410 (2011)], the scanning
tunneling spectroscopy experiment in the stoichiometric FeSe reveals evidence
for nodal superconductivity and strong anisotropy. The nodal structure can be
explained with the extended s-wave pairing structure with the mixture of the
$s_{x^2+y^2}$ and $s_{x^2y^2}$ pairing symmetries. We calculate the anisotropic
vortex structure by using the self-consistent Bogoliubov-de Gennes mean-field
theory. In considering the absence of magnetic ordering in the FeSe at the
ambient pressure, orbital ordering is introduced, which breaks the $C_4$
lattice symmetry down to $C_2$, to explain the anisotropy in the vortex
tunneling spectra. | | Source: | arXiv, 1109.6116 | | Services: | Forum | Review | PDF | Favorites | |
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