Theory of Nonlinear Meissner Effect in High-Tc Superconductors

Details Theory of Nonlinear Meissner Effect in High-Tc Superconductors Theory of Nonlinear Meissner Effect in High-Tc Superconductors

2005-04-26

arxiv.org/abs/cond-mat/0504657v1

J. Phys. Soc. Jpn. 74 (2005) 1111

Physics

Condensed Matter

Strongly Correlated Electrons

Scientific paper

10.1143/JPSJ.74.1111

We investigate the nonlinear Meissner effect microscopically. Previous studies did not consider a certain type of interaction effect on the nonlinear phenomena. The scattering amplitude barely appears without being renormalized into the Fermi-liquid parameter. With this effect we can solve the outstanding issues (the quantitative problem, the temperature and angle dependences). The quantitative calculation is performed with use of the fluctuation-exchange approximation on the Hubbard model. It is also shown that the perturbation expansion on the supercurrent by the vector potential converges owing to the nonlocal effect.

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