# Electronic modes induced by spin and charge perturbations in Mott and Kondo insulators

https://mdr.nims.go.jp/datasets/ee95490e-a674-46d8-9583-23813684e37e

## File

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## Id

ee95490e-a674-46d8-9583-23813684e37e

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-10-16T05:48:00.465964Z

## Updated at

2025-12-11T03:21:37.565418Z

## Published at

2025-12-09T07:26:08.630627Z

## Doi

https://doi.org/10.48505/nims.5816

## First published url

https://doi.org/10.1103/ythd-s2x8

## Date published

2025-12-03

## Recorded date published

2025-12

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: モット絶縁体と近藤絶縁体におけるスピンと電荷の摂動によって誘起される電子モード
  title_type: alternative
  lang: ja
- title: Electronic modes induced by spin and charge perturbations in Mott and Kondo
    insulators
  title_type: original
  lang: en

## Description

- description: 'Electronic band structures usually remain unaffected by doping via
    a chemical-potential shift or by increasing the temperature in conventional band
    insulators. In contrast, it has been shown that those of Mott and Kondo insulators
    can be altered by doping or by increasing the temperature: electronic modes are
    induced within the band gap, exhibiting momentum-shifted magnetic dispersion relations
    from the band edges. Here, this study demonstrates that the underlying mechanism
    of the remarkable strong-correlation effects can be generalized to the emergence
    of electronic modes caused by various spin and charge perturbations, including
    magnetization of spin-gapped Mott and Kondo insulators. These emergent modes can
    alter the band structure if a macroscopic number of spins or charges are excited
    by the perturbations at a given moment. The origins and dispersion relations of
    these emergent modes, particularly why and how the dispersion relations depend
    on the momentum and energy of the perturbations, are elucidated by investigating
    the selection rules and using the Bethe ansatz and the effective theory for weak
    inter-unit-cell hopping. The validity and generality of the theoretical results
    across different models and spatial dimensions are verified by numerical calculations
    for the one- and two-dimensional Hubbard models, periodic Anderson models, Kondo
    lattice models, and ladder and bilayer Hubbard models. This study provides crucial
    insights into why and how spin and charge perturbations can alter the band structure
    in strongly correlated insulators, thereby paving the way for band-structure engineering
    in strong-correlation electronics, which enables previously unexplored functionalities
    by exploiting the unconventional characteristics revealed in this paper.'
  description_type: abstract
  lang: eng

## Creator

- name: Masanori Kohno
  role: author
  orcid: https://orcid.org/0000-0001-5900-9139
  organization: National Institute for Materials Science
  department: Research Center for Materials Nanoarchitectonics (MANA)/Quantum Materials
    Field/Quantum Material Properties Group

## Contact agent



## Publisher

organization: American Physical Society (APS)

## Managing organization



## Keyword

- subject: Strongly correlated systems
  schema: not_defined
- subject: Mott insulators
  schema: not_defined
- subject: Electronic structure
  schema: not_defined
- subject: Spin perturbation
  schema: not_defined
- subject: Charge perturbation
  schema: not_defined
- subject: Kondo insulators
  schema: not_defined

## Rights

- identifier: https://creativecommons.org/licenses/by/4.0/

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: PHYSICAL REVIEW B
  issn: '24699950'
  volume: '112'
  issue: '24'

## Conference



## Related item



## Funding

- identifier: 22K03477, 25K07160
  funder_name: 日本学術振興会

## Instrument



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## Measurement method



## Specimen



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## Fileset

- id: 9509d2b0-5c1c-429c-ac51-5b017aed3730
  filename: published_version.pdf
  content_type: application/pdf
  size: 10192313
  md5: 0577f23e3a4dfdb52f260a9ba371052f
- id: edaf6f84-c2bb-4e94-a8ab-ff5df2e5bca2
  filename: data.dir.zip
  content_type: application/zip
  size: 164905107
  md5: fe6ef0bb371646b231ed7d6e0632195a

## Thumbnail

fileset_id: 9509d2b0-5c1c-429c-ac51-5b017aed3730
filename: published_version.pdf