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Superconducting 2D System with Lifted Spin Degeneracy: Mixed Singlet-Triplet State

Lev P. Gor'kov, Emmanuel I. Rashba

DOI 10.1103/PhysRevLett.87.037004 · Physical Review Letters

T1

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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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FormulaReported Tc (K)Pressure (GPa)Type
WO3

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—Pressure not reportedunknown

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