Work

Orbital-selective electronic modes induced by doping and originating from distinct spin excitations: an essential feature of orbital-selective Mott transition

Year: 2026

Type: preprint

Abstract: The nature of the orbital-selective Mott transition (OSMT) remains elusive. This study shows that, by doping an orbitally degenerate spin-1 antiferromagnetic insulator in the Kanamori-Hubbard model, electronic modes emerge in the band gap in an orbital-selective manner, exhibiting momentum-shifted spin-mode dispersion relations. Electronic modes originating from conventional spin excitations, including the low-energy one, appear in the doped orbital, while those from inter-orbital spin excitations appear in the undoped orbital. These emergent modes constitute an essential feature of the OSMT.

Source: arXiv (Cornell University)

DOI: 10.48550/arxiv.2609.09741

Author: Kohno, Masanori

Institutions: National Institute for Materials Science, Research Center for Materials Nanoarchitectonics

Language: English

Topic: Advanced Condensed Matter Physics

Subfield: Condensed Matter Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funders: Ministry of Education, Culture, Sports, Science and Technology, Japan Society for the Promotion of Science, National Institute for Materials Science

Award: Theoretical study on electronic states induced by external fields in strongly correlated insulators

OpenAlex ID: W7212173477

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