Falko, Vladimir and Narozhny, Boris N. (2006) Triplet pairing due to spin-orbit-assisted electron-phonon coupling. Physical Review B, 74 (1). ISSN 1098-0121
We propose a microscopic mechanism for spin-dependent attraction in a metal leading to triplet pairing, which is caused by spin-orbit-assisted coupling between electrons and optical phonons in crystals with complex unit cells. Using two examples of crystals with either a cubic or a layered square lattice, we show that spin-orbit-assisted electron-phonon coupling generates triplet pairing with uniquely predetermined tensor structure of the p-wave order parameter.
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