Multipolar superconductivity in Luttinger semimetals

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Topological superconductivity in multiband systems has received much attention due to a variety of possible exotic superconducting order parameters as well as nontrivial bulk and surface states. While the impact of coexisting magnetic order on superconductivity, such as ferromagnetic superconductors, has been studied for many years, the implication of coexisting multipolar order has not been explored much despite the possibility of multipolar hidden order in a number of f-electron materials. In this work, we investigate topological properties of multipolar superconductors that may arise when quadrupolar local moments are coupled to conduction electrons in the multiband Luttinger semimetal. We show that the multipolar ordering of local moments leads to various multipolar superconductors with distinct topological properties. We apply these results to the quadrupolar Kondo semimetal system, PrBi, by deriving the microscopic multipolar Kondo model and examining the possible superconducting order parameters.
Publisher
AMER PHYSICAL SOC
Issue Date
2020-06
Language
English
Article Type
Article
Citation

PHYSICAL REVIEW RESEARCH, v.2, no.2, pp.023416

ISSN
2643-1564
DOI
10.1103/PhysRevResearch.2.023416
URI
http://hdl.handle.net/10203/276516
Appears in Collection
PH-Journal Papers(저널논문)
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