Publication: Superconducting 2D System with Lifted Spin Degeneracy: Mixed Singlet-Triplet State
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2001
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American Physical Society (APS)
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Gor’kov, Lev P., and Emmanuel I. Rashba. 2001. “Superconducting 2D System with Lifted Spin Degeneracy: Mixed Singlet-Triplet State.” Physical Review Letters 87 (3) (July 2). doi:10.1103/physrevlett.87.037004.
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Abstract
Motivated by recent experimental findings, we have developed a theory of the superconducting state for 2D metals without inversion symmetry modeling the geometry of a surface superconducting layer in a field-effect transistor or near the boundary doped by adsorbed ions. In such systems the twofold spin degeneracy is lifted by spin-orbit interaction, and singlet and triplet pairings are mixed in the wave function of the Cooper pairs. As a result, spin magnetic susceptibility becomes anisotropic and Knight shift retains finite and rather high value at T=0.
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