Triplet character of 2D-fermion dimers arising from s-wave attraction via spin-orbit coupling and Zeeman splitting
dc.citation.issue | 5 | |
dc.citation.volume | 12 | |
dc.contributor.author | Ebling U | |
dc.contributor.author | Zulicke U | |
dc.contributor.author | Brand J | |
dc.date.accessioned | 2024-08-05T03:10:57Z | |
dc.date.available | 2024-08-05T03:10:57Z | |
dc.date.issued | 2022-05-19 | |
dc.description.abstract | We theoretically study spin-1=2 fermions confined to two spatial dimensions and experiencing isotropic short-range attraction in the presence of both spin-orbit coupling and Zeeman spin splitting - a prototypical system for developing topological superfluidity in the many-body sector. Exact solutions for two-particle bound states are found to have a triplet contribution that dominates over the singlet part in an extended region of parameter space where the combined Zeeman- and center-of-mass-motion-induced spin-splitting energy is large. The triplet character of dimers is purest in the regime of weak s-wave interaction strength. Center-of-mass momentum is one of the parameters determining the existence of bound states, which we map out for both two- and onedimensional types of spin-orbit coupling. Distinctive features emerging in the orbital part of the bound-state wave function, including but not limited to its p-wave character, provide observable signatures of unconventional pairing. | |
dc.description.confidential | false | |
dc.identifier.citation | Ebling U, Zulicke U, Brand J. (2022). Triplet character of 2D-fermion dimers arising from s-wave attraction via spin-orbit coupling and Zeeman splitting. SciPost Physics. 12. 5. | |
dc.identifier.doi | 10.21468/SciPostPhys.12.5.167 | |
dc.identifier.eissn | 2542-4653 | |
dc.identifier.elements-type | journal-article | |
dc.identifier.number | 167 | |
dc.identifier.uri | https://mro.massey.ac.nz/handle/10179/71201 | |
dc.language | English | |
dc.publisher | SciPost Foundation | |
dc.publisher.uri | https://scipost.org/10.21468/SciPostPhys.12.5.167 | |
dc.relation.isPartOf | SciPost Physics | |
dc.rights | (c) 2023 The Author/s | |
dc.rights | CC BY 4.0 | |
dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ | |
dc.title | Triplet character of 2D-fermion dimers arising from s-wave attraction via spin-orbit coupling and Zeeman splitting | |
dc.type | Journal article | |
pubs.elements-id | 455685 | |
pubs.organisational-group | College of Health |