Fractional flux quanta at intrinsic metallic interfaces of noncentrosymmetric superconductors

Abstract

We examine intrinsic interfaces separating crystalline twin domains of opposite spin-orbit coupling in a noncentrosymmetric superconductor such as CePt3Si. At these interfaces, low-energy Andreev bound states occur as a consequence of parity-mixed Cooper pairing, and a superconducting phase which violates time reversal symmetry can be realized. This provides an environment allowing flux lines with fractional flux quanta to be formed at the interface. Their presence could have strong implications on the flux creep behavior in such superconductors.

arXiv comment4 pages, 3 figures

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Cited by in corpus (15)

• Parity-Mixed Superconductivity in Locally Non-centrosymmetric System
• Type-I superconductivity in noncentrosymmetric NbGe${}_2$
• Vortex avalanches in the non-centrosymmetric superconductor Li2Pt3B
• Model for magnetic flux pattern induced by in-plane magnetic fields on spatially inhomogeneous superconducting interfaces of LaAlO_3-SrTiO_3
• Spin Currents and Spontaneous Magnetization at Twin Boundaries of Noncentrosymmetric Superconductors
• Unambiguous probe of parity-mixing of Cooper pairs in noncentrosymmetric superconductors
• Extreme vortex pinning in the non-centrosymmetric superconductor CePt${}_3$Si
• Strongly parity-mixed superconductivity in Rashba-Hubbard model
• Signatures of the Helical Phase in the Critical Fields at Twin Boundaries of Non-Centrosymmetric Superconductors
• Large spin-orbit splitting and weakly-anisotropic superconductivity revealed with single-crystalline noncentrosymmetric CaIrSi3
• Phase diagram of geometric d-wave superconductor Josephson junctions
• Ginzburg-Landau description of twin boundaries in noncentrosymmetric superconductors
• Superconductivity in a Magnetic Rashba Semimetal EuAuBi
• Interface currents and magnetization in singlet-triplet superconducting heterostructures: Role of chiral and helical domains
• Superconducting meron phase in locally noncentrosymmetric superconductors