Reentrant superconductivity in a strong applied field within the tight-binding model
Maciej M. Maśka
DOI 10.1103/PhysRevB.66.054533 · Physical Review B
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Abstract
It was suggested by Rasolt and Tešanović [Rev. Mod. Phys. 64, 709 (1992)] that the Landau level quantization in isotropic superconductors could enhance superconductivity in a very strong magnetic field, above the upper critical field (Hc2). We derive a generalized Harper equation for superconducting systems, and show that a similar reentrant behavior appears in a lattice model, even though the Landau-level-structure is destroyed by the periodic potential in that case. Both the orbital and the Zeeman field-induced effects are taken into account.
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