拓扑赋能的超导性
超导电性
2022-08-11 v2 强关联电子
摘要
马约拉纳零模是一维拓扑超导广受追寻的后果。在此，我们表明，反之，伴随动力学瞬子事件的零模会强烈增强——在某些情况下甚至赋能——超导性。我们发现一维拓扑三重态超导体的动力学由作用量中的 项支配。对于各向同性三重态，该项赋能代数电荷- 超导性，而后者在非拓扑超导体中被涨落破坏。对于各向异性三重态，零模抑制量子相位滑移，并在相图的广大区域稳定超导性。我们给出了拓扑增强超导态的相关函数与热力学的预言。
引用
@article{arxiv.2108.05360,
title = {Topologically enabled superconductivity},
author = {Michael A. Rampp and Elio J. König and Jörg Schmalian},
journal= {arXiv preprint arXiv:2108.05360},
year = {2022}
}
备注
15 pages, 3 figures; Accepted and revised version: the structure has been revised, the discussion of the anisotropic case has mostly been relegated to the appendix. A discussion of the influence of dynamical gauge fields, as well as some numerical results on dynamic zero modes have been added. The exponent of the isotropic single-fermion correlator has been corrected