Microscopic theory of in-plane critical field in two-dimensional Ising superconducting systems
Hongchao Liu, Haiwen Liu, Ding Zhang, X. C. Xie
DOI 10.1103/PhysRevB.102.174510 · Physical Review B
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Abstract
We study the in-plane critical magnetic field of two-dimensional Ising superconducting systems and propose the microscopic calculation for these disordered two-dimensional superconducting 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 interaction, 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 ultrathin films.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Sn Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 1.25 | Pressure not reported | unknown |
| Pb Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 6 | Pressure not reported | unknown |
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