DC Field | Value | Language |
---|---|---|
dc.contributor.author | Oh, Hanbit | ko |
dc.contributor.author | Moon, Eun-Gook | ko |
dc.date.accessioned | 2020-08-06T06:55:05Z | - |
dc.date.available | 2020-08-06T06:55:05Z | - |
dc.date.created | 2020-07-27 | - |
dc.date.created | 2020-07-27 | - |
dc.date.created | 2020-07-27 | - |
dc.date.issued | 2020-07 | - |
dc.identifier.citation | PHYSICAL REVIEW B, v.102, no.2 | - |
dc.identifier.issn | 2469-9950 | - |
dc.identifier.uri | http://hdl.handle.net/10203/275735 | - |
dc.description.abstract | Exotic quantum phases including topological states and non-Fermi liquids may be realized by quantum states with total angular momentum j = 3/2, as manifested in HgTe and pyrochlore iridates. Recently, an exotic superconducting state with a nonzero density of states of zero-energy Bogoliubov (BG) quasiparticles, the Bogoliubov Fermi surface (BG-FS), was also proposed in a centrosymmetric j = 3/2 system, protected by a Z(2) topological invariant. Here, we consider interaction effects of a centrosymmetric BG-FS and demonstrate its instability by using mean-field and renormalization group analysis. The Bardeen-Cooper-Schrieffer (BCS)-type logarithmical enhancement is shown in fluctuation channels associated with inversion symmetry. Thus, we claim that the inversion-symmetry instability is an intrinsic characteristic of a BG-FS under generic attractive interactions between BG quasiparticles. In drastic contrast to the standard BCS superconductivity, a Fermi surface may generically survive even with the instability. We propose the experimental setup, a second-harmonic-generation experiment with a strain gradient, to detect the instability. Possible applications to iron-based superconductors and heavy-fermion systems, including FeSe, are also discussed. | - |
dc.language | English | - |
dc.publisher | AMER PHYSICAL SOC | - |
dc.title | Instability of j=3/2 Bogoliubov Fermi surfaces | - |
dc.type | Article | - |
dc.identifier.wosid | 000545539000004 | - |
dc.identifier.scopusid | 2-s2.0-85088814818 | - |
dc.type.rims | ART | - |
dc.citation.volume | 102 | - |
dc.citation.issue | 2 | - |
dc.citation.publicationname | PHYSICAL REVIEW B | - |
dc.identifier.doi | 10.1103/PhysRevB.102.020501 | - |
dc.contributor.localauthor | Moon, Eun-Gook | - |
dc.description.isOpenAccess | N | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordPlus | RESONANCE | - |
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