Band theoretical approaches to topological physics in strongly-correlated f-electron Kondo systems
SCIE
SCOPUS
- Title
- Band theoretical approaches to topological physics in strongly-correlated f-electron Kondo systems
- Authors
- Kang, Chang-Jong; Kim, Kyoo; Min, B., I
- Date Issued
- 2022-07
- Publisher
- IOP Publishing Ltd
- Abstract
- First-principles band structure theory on the basis of the density functional theory (DFT) plays an essential role in the investigation of topological properties of weakly-correlated systems. DFT band structures show clear bulk band crossings for Weyl and Dirac semimetals, and surface band crossings for topological insulators and topological-crystalline insulators. In contrast, for strongly-correlated f-electron systems, their topological properties are relatively less explored because the simple DFT does not work properly in describing the electronic structures of strongly-correlated f electrons. In this perspective, we examine the band theoretical approaches to topological properties of strongly-correlated f-electron Kondo systems. We recapitulate current status of understanding of electronic structures and topological properties of strongly-correlated 4f-electron systems, such as Ce, SmB6, and g-SmS, and also a 5f-electron system PuB4, the electronic structures of which were investigated by the DFT combined with the dynamical mean-field theory (DFT + DMFT). Finally, we provide future directions and perspectives of improving theoretical band approaches to search for new topological f-electron systems, as an outlook.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/117905
- DOI
- 10.1088/1361-648X/ac4e47
- ISSN
- 0953-8984
- Article Type
- Article
- Citation
- JOURNAL OF PHYSICS-CONDENSED MATTER, vol. 34, no. 27, 2022-07
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