Vortex state in a Fulde-Ferrell-Larkin-Ovchinnikov superconductor based on the quasiclassical theory

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We investigate the vortex state with Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) modulations suggested for a high field phase of CeCoIn_5. On the basis of the quasiclassical Eilenberger theory, we calculate the three dimensional structure of pair potentials, internal magnetic fields, paramagnetic moments, and electronic states, for the s-wave and the d-wave pairings comparatively. The π-phase shift of the pair potential at the FFLO nodal plane or at the vortex core induces sharp peak states in the local density of states, and enhances the local paramagnetic moment. We also discuss the NMR spectrum and the neutron scattering as methods to detect the FFLO structure.
11 pages, 10 figures

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Superconductivity

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http://salesiana.dossiersoluciones.com/handle/123456789/135298

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/0704.0483
 http://arxiv.org/abs/0704.0483
 Phys. Rev. B 76, 014503 (2007)
 doi:10.1103/PhysRevB.76.014503

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arXiv