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Exchange-correlation effects in magnetic-field-induced superconductivity

K. Capelle
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Abstract

Motivated by recent experiments on the organic superconductor $λ-(BETS)_2FeCl_4$ we study the Jaccarino-Peter effect (JPE), the earliest example of magnetic-field-induced superconductivity, from the point of view of current-density-functional theory. It is found that both Meissner (diamagnetic) and Pauli (paramagnetic) pair breaking are suppressed by an exchange-correlation contribution to the vector potential, arising at the sites of the magnetic ions. This explains a number of otherwise puzzling experimental observations, and sheds new light on earlier theories of the JPE.

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K. Capelle. 2001-10-01. Exchange-correlation effects in magnetic-field-induced superconductivity. https://doi.org/10.1103/physrevb.65.100515

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