Critical magnetic field of ultrathin superconducting films and interfaces

Abstract

We derive an analytic expression for the temperature dependent critical magnetic field parallel to ultrathin superconducting films with Rashba spin-orbit interaction. Thereby we cover the range from small to large spin-orbit interactions $\lambda$ compared with the gap parameter ${\Delta }_0$. We find that at a critical spin-orbit energy ${\lambda }_c$ a first-order phase transition takes place at which the pairing momentum of the Cooper pairs changes discontinuously. We speculate that this might give raise to new phenomena. With increasing $\lambda /{\Delta }_0$, the pair formation changes from interband to intraband pairing. For $\lambda >{\lambda }_c$, a dimensional cross-over of the critical field from two to one dimension is taking place.

References in corpus (14)

• Superconductivity in single-layer films of FeSe with a transition temperature above 100 K
• Superconducting 2D system with lifted spin degeneracy: Mixed singlet-triplet state
• Helical vortex phase in the non-centrosymmetric CePt_3Si
• Theory of 2D superconductor with broken inversion symmetry
• Inhomogeneous LOFF phase revisited for surface superconductivity
• Extremely strong coupling superconductivity in artificial two-dimensional Kondo lattices
• Topological Fulde-Ferrel-Larkin-Ovchinnikov states in Spin-orbit Coupled Fermi Gases
• Two-dimensional superconducting state of monolayer Pb films grown on GaAs(110) in a strong parallel magnetic field
• From Kondo Lattices to Kondo Superlattices
• Route to Topological Superconductivity via Magnetic Field Rotation
• Fulde-Ferrell-Larkin-Ovchinnikov Phases in Two-dimensional Spin-Orbit Coupled Degenerate Fermi Gases
• Pauli-limited upper critical field in dirty d-wave superconductors
• Topological quantum phase transitions and edge states in spin-orbital coupled Fermi gases
• Rashba versus Kohn-Luttinger: Evolution of p-wave superconductivity in magnetized two-dimensional Fermi gas subject to spin-orbit interaction

Cited by in corpus (11)

• Supercurrent diode effect and finite momentum superconductivity
• Type-II Ising Pairing in Few-Layer Stanene
• Topological metals and finite-momentum superconductors
• Finite-momentum superconductivity in two-dimensional altermagnets with a Rashba-type spin-orbit coupling
• Fulde-Ferrell States in Inverse Proximity Coupled Magnetically-Doped Topological Heterostructures
• Microscopic theory of in-plane critical field in two-dimensional Ising superconducting systems
• Fermi surface segmentation in the helical state of a Rashba superconductor
• Magnetoelectric effect in the helical state of a superconductor/ferromagnet bilayer
• Orbital-Induced Crossover of the Fulde-Ferrell-Larkin-Ovchinnikov Phase into Abrikosov-like States
• Non uniform superconductivity in wires with strong spin-orbit coupling
• Field resilient superconductivity in atomic layer crystalline materials