Abstract
We studied the strong-coupling effect upon an isolated vortex in a two-dimensional chiral p-wave superconductor. We solved the Eilenberger equation for the quasiclassical Green’s functions and the Éliashberg equation with single-mode Einstein boson self-consistently. We calculated the free energy of each obtained vortex and found that a non-axisymmetric vortex metastably exists in some situation.
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Notes
With this parameter, the ratio of the energy gap to the critical temperature (\(2{\varDelta }/T_{\text {c}}\)) is about \(5.6\) at \(T=0.02T_{\text {c}}\). For example, CeCoIn\(_5\) exhibits such a large value (\(\approx 6\)) [25].
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Acknowledgements
We thank J. A. Sauls and Y. Tsutsumi for helpful discussions. This work was supported by JSPS KAKENHI Grant Number 15K05160.
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Kurosawa, N., Kato, Y. Emergence of Non-Axisymmetric Vortex in Strong-Coupling Chiral p-Wave Superconductor. J Low Temp Phys 187, 538–544 (2017). https://doi.org/10.1007/s10909-016-1692-8
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DOI: https://doi.org/10.1007/s10909-016-1692-8