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

2001/03/21 by L. P. Gor’kov, Lev P. Gor'kov, Emmanuel I. Rashba +1 · 37 citations
Physics and Astronomy · #Anisotropy #Condensed matter physics #Degeneracy (biology) #Excited state #Knight shift #Physics #Physics of Superconductivity and Magnetism #Point reflection #Quantum and electron transport phenomena #Quantum mechanics #Rare-earth and actinide compounds #Singlet state #Spin (aerodynamics) #Superconductivity #Triplet state #cond-mat.supr-con

paper · pdf · doi:10.1103/physrevlett.87.037004

5 pages, no figures

arxiv created 2001/03/21 · openalex publication_date 2001/07/02 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

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.

Citations

• Possible nucleation of a 2D superconducting phase on WO single crystals surface doped with Na
• Phenomenological theory of unconventional superconductivity

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