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Domain walls and their experimental signatures in s+is superconductors | | Julien Garaud
; Egor Babaev
; | | Date: |
14 Aug 2013 | | Abstract: | Arguments were recently advanced that hole-doped
Ba$_{1-x}$K$_{x}$Fe$_2$As$_2$ exhibit s+is state at certain doping. Spontaneous
breaking of time reversal symmetry dictates that it possess domain wall
excitations. Here, we discuss what are the experimentally detectable signatures
of domain walls in s+is state. We find that in this state the domain walls can
have dipole-like magnetic signature (in contrast to the magnetic signature of
domain walls p+ip superconductors). We also propose experiments where
quench-induced domain walls can be stabilized by geometric barriers and be
observed via their influence on the magnetization process, thereby providing an
experimental tool to confirm s+is state. | | Source: | arXiv, 1308.3220 | | Services: | Forum | Review | PDF | Favorites | |
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