Microscopic theory of in-plane critical field in two-dimensional Ising superconducting systems

Abstract

We study the in-plane critical magnetic field of two-dimensional Ising superconducting systems, and propose the microscopic theory for these systems with or without inversion symmetry. Protected by certain specific spin-orbit interaction which polarizes the electron spin to the out-of-plane direction, the in-plane critical fields largely surpass the Pauli limit and show remarkable upturn in the zero temperature limit. The impurity scattering and Rashba spin-orbit coupling, treated on equal-footing in the microscopic framework, both weaken the critical field but in qualitatively different manners. The microscopic theory is consistent with recent experimental results in stanene and Pb superconducting ultra-thin films.

References in corpus (20)

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• Evidence of Ising pairing in superconducting NbSe${}_2$ atomic layers
• Two Dimensional Ising Superconductivity in Gated MoS${}_2$
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• Type-II Ising Pairing in Few-Layer Stanene
• Type-II Ising superconductivity in two-dimensional materials with strong spin-orbit coupling
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• Enhancement of the upper critical field in disordered transition metal dichalcogenide monolayers
• Interface induced Zeeman-protected superconductivity in ultrathin crystalline lead films
• Anomalous quantum Griffiths singularity in ultrathin crystalline lead films
• Orbitally limited pair-density wave phase of multilayer superconductors
• Critical magnetic field of ultrathin superconducting films and interfaces

Cited by in corpus (5)

• Magnetic field-induced "mirage" gap in an Ising superconductor
• Weyl nodal line induced pairing in Ising superconductor and high critical field
• Controlling charge and spin transport in an Ising-superconductor Josephson junction
• Holstein polarons, Rashba-like spin splitting and Ising superconductivity in electron-doped MoSe2
• Unconventional pairing in Ising superconductors: Application to monolayer NbSe${}_2$