Orbital-limiting and modulation induced by missing parity in non-centrosymmetric superconductors

Abstract

We examine the depairing field $H_{c2}(T)$ of non-centrosymmetric superconductors with a spin-orbit coupling larger than the Zeeman energy at $H_{c2}(0)$ by taking account of the mixing of spin-singlet and triplet pairing states due to the missing parity. When the singlet and triplet pairing components are mixed with an equal weight in a cubic non-centrosymmetric system, the paramagnetic depairing effect is significantly suppressed so that $H_{c2}(T)$ approaches its orbital-limited value. A similar event also occurs in a quasi two-dimensional Rashba non-centrosymmetric system. The present results are relevant to the $H$-$T$ phase diagrams of CePt${}_3$Si and the families of Li${}_2$Pd${}_{3-x}$Pt${}_x$B.

4 figures, To appear in Phys. Rev. B

References in corpus (4)

• Theory of 2D superconductor with broken inversion symmetry
• Magnetic Properties in Non-centrosymmetric Superconductors with and without Antiferromagnetic Order
• High field superconducting phase diagrams including Fulde-Ferrell-Larkin-Ovchinnikov vortex states
• Signature of superconducting states in cubic crystal without inversion symmetry

Cited by in corpus (1)

• Modulated vortex states in Rashba non-centrosymmetric superconductors