The Fulde-Ferrell-Larkin-Ovchinnikov Superconductivity in Disordered Systems
A. Ptok
Institute of Physics, University of Silesia, Uniwersytecka 4, 40-007 Katowice, Poland
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The Fulde-Ferrell-Larkin-Ovchinnikov phase, with a spatially oscillating order parameter, may be induced by strongly magnetic field at low temperature. It is believed that the Fulde-Ferrell-Larkin-Ovchinnikov phase can exist only in homogeneous superconductors, and even weak impurity potential can lead to its destruction. The analysis of the Fulde-Ferrell-Larkin-Ovchinnikov phase in the Bogoliubov-de Gennes equation shows however, that this phase can exist in the presence of weak disorder. Using Bogoliubov-de Gennes equations, we discussed the influence of diagonal and off-diagonal disorder on the Fulde-Ferrell-Larkin-Ovchinnikov phase.
DOI: 10.12693/APhysPolA.118.420
PACS numbers: 74.20.Fg, 74.20.Mn, 74.20.Rp, 74.25.Dw, 74.81.-g