Multiorbital singlet pairing and d + d superconductivity
| dc.citation.articleNumber | 3 | |
| dc.citation.journalTitle | npj Quantum Materials | |
| dc.citation.volumeNumber | 6 | |
| dc.contributor.author | Nica, Emilian M. | |
| dc.contributor.author | Si, Qimiao | |
| dc.contributor.org | Rice Center for Quantum Materials | |
| dc.date.accessioned | 2021-02-10T14:04:20Z | |
| dc.date.available | 2021-02-10T14:04:20Z | |
| dc.date.issued | 2021 | |
| dc.description.abstract | Recent experiments in multiband Fe-based and heavy-fermion superconductors have challenged the long-held dichotomy between simple s- and d-wave spin-singlet pairing states. Here, we advance several time-reversal-invariant irreducible pairings that go beyond the standard singlet functions through a matrix structure in the band/orbital space, and elucidate their naturalness in multiband systems. We consider the sτ3 multiorbital superconducting state for Fe-chalcogenide superconductors. This state, corresponding to a d + d intra- and inter-band pairing, is shown to contrast with the more familiar d + id state in a way analogous to how the B- triplet pairing phase of 3He superfluid differs from its A- phase counterpart. In addition, we construct an analog of the sτ3 pairing for the heavy-fermion superconductor CeCu2Si2, using degrees-of-freedom that incorporate spin-orbit coupling. Our results lead to the proposition that d-wave superconductors in correlated multiband systems will generically have a fully-gapped Fermi surface when they are examined at sufficiently low energies. | |
| dc.identifier.citation | Nica, Emilian M. and Si, Qimiao. "Multiorbital singlet pairing and d + d superconductivity." <i>npj Quantum Materials,</i> 6, (2021) Springer Nature: https://doi.org/10.1038/s41535-020-00304-3. | |
| dc.identifier.digital | s41535-020-00304-3 | |
| dc.identifier.doi | https://doi.org/10.1038/s41535-020-00304-3 | |
| dc.identifier.uri | https://hdl.handle.net/1911/109848 | |
| dc.language.iso | eng | |
| dc.publisher | Springer Nature | |
| dc.rights | This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. | |
| dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ | |
| dc.title | Multiorbital singlet pairing and d + d superconductivity | |
| dc.type | Journal article | |
| dc.type.dcmi | Text | |
| dc.type.publication | publisher version |
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