Nonuniform Spin Triplet Superconductivity due to Antisymmetric Spin-Orbit Coupling in Noncentrosymmetric Superconductor CePt${}_3$Si

Abstract

We show that the nonuniform state (Fulde-Ferrel-Larkin-Ovchinnikov (FFLO) state) of the spin triplet superconductivity in noncentrosymmetric systems is stabilized by antisymmetric spin-orbit coupling even if the magnetic field is absent. The transition temperature of the spin triplet superconductivity is reduced by the antisymmetric spin-orbit coupling in general. This pair breaking effect is shown to be similar to the Pauli pair breaking effect due to magnetic field for the spin singlet superconductivity, in which FFLO state is stabilized near the Pauli limit (or Chandrasekhar-Clogston limit) of external magnetic field. Since there are gapless excitations in nonuniform superconducting state, some physical quantities such as specific heat and penetration depth should obey the power low temperature-dependences. We discuss the possibility of the realization of nonuniform state in CePt${}_3$Si.

8 pages, 6 figures

References in corpus (9)

• Line nodes in the superconducting gap function of noncentrosymmetric CePt_3Si
• Magnetoelectric effects in heavy-fermion superconductors without inversion symmetry
• Order parameter in superconductors with non-degenerate bands
• Nuclear Magnetic Relaxation Rate in a Noncentrosymmetric Superconductor
• Temperature Dependence of the Superfluid Density in a Noncentrosymmetric Superconductor
• Phase Diagram and Spectroscopy of FFLO states of two-dimensional d-wave superconductors
• Evidence for Novel Pairing State in Noncentrosymmetric Superconductor CePt3Si: 29Si-NMR Knight Shift Study
• Emergent Nodal Excitations due to the Coexistence of Superconductivity and Antiferromagnetism: Cases with and without Inversion Symmetry
• NMR study of electronic state in CePt3Si

Cited by in corpus (15)

• Fulde-Ferrell-Larkin-Ovchinnikov State in Heavy Fermion Superconductors
• Superconductivity and Magnetism in Non-centrosymmetric System: Application to CePt_3Si
• Route to Observable Fulde-Ferrell-Larkin-Ovchinnikov Phases in 3D Spin-Orbit Coupled Degenerate Fermi Gases
• Tailoring $T_c$ by symmetry principles: The concept of Superconducting Fitness
• Weyl semimetals and superconductors designed in an orbital selective superlattice
• Magnetic Properties in Non-centrosymmetric Superconductors with and without Antiferromagnetic Order
• Unconventional superconductivity induced in Nb films by adsorbed chiral molecules
• Theory of Fulde-Ferrell-Larkin-Ovchinnikov state of superconductors with and without inversion symmetry: Hubbard model approach
• Specific Heat Study of Magnetic and Superconducting Transitions in CePt3Si
• Interplay between superconductivity and ferromagnetism in epitaxial Nb(110)/Au(111)/Co(0001) trilayers
• Spontaneous magnetization in unitary superconductors with time reversal symmetry breaking
• Singlet-triplet mixing in the order parameter of the noncentrosymmetric superconductor Ru${}_7$B${}_3$
• Spontaneous appearance of nonzero momentum Cooper pairing: Possible application to the iron-pnictides
• Adherence of the rotating vortex lattice in the noncentrosymmetric superconductor Ru${}_7$B${}_3$ to the London model
• Magnetic excitations in the helical Rashba superconductor