Topological versus conventional superconductivity in a Weyl semimetal: A microscopic approach
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arXiv
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| Main Authors: | , , , |
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| Format: | Preprint |
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2024
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| _version_ | 1866916478084710400 |
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| author | Muñoz, Enrique Esparza, Juan Pablo Braun, José Soto-Garrido, Rodrigo |
| author_facet | Muñoz, Enrique Esparza, Juan Pablo Braun, José Soto-Garrido, Rodrigo |
| contents | Starting from a microscopic model for the particle-particle interactions in a Weyl semimetal, we analyzed the possibility for conventional as well as monopole Cooper pairing between quasiparticle excitations at the same (intra-nodal) or opposite (inter-nodal) Weyl nodes. We derived a coupled system of self-consistent BCS-like equations, where the angular dependence of the pairings is directly determined from the microscopic interaction symmetries. We studied the competition between conventional and monopole superconducting phases, thus obtaining explicitly the phase diagrams from the microscopic interaction model parameters. We determined the critical temperatures for both phases, and the low temperature critical behavior, including the specific heat, that we suggest as possible experimental probe for topological quantum criticality in Weyl semimetals. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2411_07338 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Topological versus conventional superconductivity in a Weyl semimetal: A microscopic approach Muñoz, Enrique Esparza, Juan Pablo Braun, José Soto-Garrido, Rodrigo Superconductivity Strongly Correlated Electrons Starting from a microscopic model for the particle-particle interactions in a Weyl semimetal, we analyzed the possibility for conventional as well as monopole Cooper pairing between quasiparticle excitations at the same (intra-nodal) or opposite (inter-nodal) Weyl nodes. We derived a coupled system of self-consistent BCS-like equations, where the angular dependence of the pairings is directly determined from the microscopic interaction symmetries. We studied the competition between conventional and monopole superconducting phases, thus obtaining explicitly the phase diagrams from the microscopic interaction model parameters. We determined the critical temperatures for both phases, and the low temperature critical behavior, including the specific heat, that we suggest as possible experimental probe for topological quantum criticality in Weyl semimetals. |
| title | Topological versus conventional superconductivity in a Weyl semimetal: A microscopic approach |
| topic | Superconductivity Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2411.07338 |