Topological superconducting states in monolayer FeSe/SrTiO3 | |
Article | |
关键词: SINGLE-LAYER FESE; HIGH-TEMPERATURE SUPERCONDUCTIVITY; SURFACE; ORIGIN; FILMS; | |
DOI : 10.1103/PhysRevB.92.165104 | |
来源: SCIE |
【 摘 要 】
The monolayer FeSe with a thickness of one unit cell grown on a single-crystal SrTiO3 substrate (FeSe/STO) exhibits striking high-temperature superconductivity with transition temperature T-c over 65 K reported by recent experimental measurements. In this work, through analyzing the distinctive electronic structure, and providing systematic classification of the pairing symmetry, we find that both s- and p-wave pairing with odd parity give rise to topological superconducting states in monolayer FeSe, and the exotic properties of s-wave topological superconducting states have close relations with the unique nonsymmorphic lattice structure which induces the orbital-momentum locking. Our results indicate that the monolayer FeSe could be in the topological nontrivial s-wave superconducting states if the relevant effective pairing interactions are dominant in comparison with other candidates.
【 授权许可】
Free