Topological Excitations in Three-band Anisotropic Superconductors
ORAL
Abstract
In the recent experimental paper [1] it was reported a disordered-driven transition from the s± to s++ states in Ba(Fe1-x Rhx)2 As2.
Theoretically this effect was studied in [2] and the field-induced coexistence of superconducting states in dirty multiband superconductors was investigated in [3].
In [4] a structural change in the morphology of vortex cores was found at the impurity-scattering-driven crossover in two-band superconductors.
We report a study of vortex matter in a three-band model near the s± to s++ state crossover where the vortex morphology is unusually sensitive to anisotropies, yielding various structural phase transitions in vortex matter.
The work was supported by the Swedish Research Council Grant No. 642-2013-7837 and by Göran Gustafsson Foundation for Research in Natural Sciences and Medicine.
[1] - Ghigo, G. et al., 2018. Physical review letters, 121(10).
[2]- Efremov, D.V. et al., 2011.Physical Review B, 84(18).
[3]- Garaud, J. et al., 2018. Physical Review B, 97(5).
[4]-Garaud, J., et al., 2017. Physical Review B, 96(14).
Theoretically this effect was studied in [2] and the field-induced coexistence of superconducting states in dirty multiband superconductors was investigated in [3].
In [4] a structural change in the morphology of vortex cores was found at the impurity-scattering-driven crossover in two-band superconductors.
We report a study of vortex matter in a three-band model near the s± to s++ state crossover where the vortex morphology is unusually sensitive to anisotropies, yielding various structural phase transitions in vortex matter.
The work was supported by the Swedish Research Council Grant No. 642-2013-7837 and by Göran Gustafsson Foundation for Research in Natural Sciences and Medicine.
[1] - Ghigo, G. et al., 2018. Physical review letters, 121(10).
[2]- Efremov, D.V. et al., 2011.Physical Review B, 84(18).
[3]- Garaud, J. et al., 2018. Physical Review B, 97(5).
[4]-Garaud, J., et al., 2017. Physical Review B, 96(14).
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Presenters
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Andrea Benfenati
Royal Institute of Technology
Authors
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Andrea Benfenati
Royal Institute of Technology
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Egor Babaev
KTH Royal Institute of Technology, KTH the Royal Institute of Technology, Theoretical Physics, Royal Institute of Technology, Royal Institute of Technology