Emergent flat band and topological Kondo semimetal driven by orbital-selective correlations

Simple item page
dc.citation.articleNumber5242en_US
dc.citation.journalTitleNature Communicationsen_US
dc.citation.volumeNumber15en_US
dc.contributor.authorChen, Leien_US
dc.contributor.authorXie, Fangen_US
dc.contributor.authorSur, Shouviken_US
dc.contributor.authorHu, Haoyuen_US
dc.contributor.authorPaschen, Silkeen_US
dc.contributor.authorCano, Jenniferen_US
dc.contributor.authorSi, Qimiaoen_US
dc.date.accessioned2024-08-07T19:15:02Zen_US
dc.date.available2024-08-07T19:15:02Zen_US
dc.date.issued2024en_US
dc.description.abstractFlat electronic bands are expected to show proportionally enhanced electron correlations, which may generate a plethora of novel quantum phases and unusual low-energy excitations. They are increasingly being pursued in d-electron-based systems with crystalline lattices that feature destructive electronic interference, where they are often topological. Such flat bands, though, are generically located far away from the Fermi energy, which limits their capacity to partake in the low-energy physics. Here we show that electron correlations produce emergent flat bands that are pinned to the Fermi energy. We demonstrate this effect within a Hubbard model, in the regime described by Wannier orbitals where an effective Kondo description arises through orbital-selective Mott correlations. Moreover, the correlation effect cooperates with symmetry constraints to produce a topological Kondo semimetal. Our results motivate a novel design principle for Weyl Kondo semimetals in a new setting, viz. d-electron-based materials on suitable crystal lattices, and uncover interconnections among seemingly disparate systems that may inspire fresh understandings and realizations of correlated topological effects in quantum materials and beyond.en_US
dc.identifier.citationChen, L., Xie, F., Sur, S., Hu, H., Paschen, S., Cano, J., & Si, Q. (2024). Emergent flat band and topological Kondo semimetal driven by orbital-selective correlations. Nature Communications, 15(1), 5242. https://doi.org/10.1038/s41467-024-49306-wen_US
dc.identifier.digitals41467-024-49306-wen_US
dc.identifier.doihttps://doi.org/10.1038/s41467-024-49306-wen_US
dc.identifier.urihttps://hdl.handle.net/1911/117613en_US
dc.language.isoengen_US
dc.publisherSpringer Natureen_US
dc.rightsExcept where otherwise noted, this work is licensed under a Creative Commons Attribution (CC BY) license.  Permission to reuse, publish, or reproduce the work beyond the terms of the license or beyond the bounds of fair use or other exemptions to copyright law must be obtained from the copyright holder.en_US
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/en_US
dc.titleEmergent flat band and topological Kondo semimetal driven by orbital-selective correlationsen_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpublisher versionen_US
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
s41467-024-49306-w.pdf
Size:
1.03 MB
Format:
Adobe Portable Document Format
Download
Collections
Faculty Publications
Physics and Astronomy Publications