# Linear resistivity at van Hove singularities in twisted bilayer WSe            <sub>2</sub>

https://mdr.nims.go.jp/datasets/b373659f-a4c6-4f84-85ab-eddafbd7d05f

## Files

- [wei-et-al-2024-linear-resistivity-at-van-hove-singularities-in-twisted-bilayer-wse2.pdf](https://mdr.nims.go.jp/filesets/845b39fd-d0b6-49b9-91db-7af7b110fdde/download) ([Detail](https://mdr.nims.go.jp/filesets/845b39fd-d0b6-49b9-91db-7af7b110fdde.md))

## Id

b373659f-a4c6-4f84-85ab-eddafbd7d05f

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-02-18T01:56:18.131091Z

## Updated at

2025-02-23T13:46:54.877700Z

## Published at

2025-02-23T13:46:54.990857Z

## Doi



## First published url

https://doi.org/10.1073/pnas.2321665121

## Date published

2024-04-16

## Recorded date published

2024-4-16

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Linear resistivity at van Hove singularities in twisted bilayer WSe            <sub>2</sub>
  title_type: original
  lang: en

## Description

- description: Different mechanisms driving a linear temperature dependence of the
    resistivity at van Hove singularities (VHSs) or metal-insulator transitions when
    doping a Mott insulator are being debated intensively with competing theoretical
    proposals. We experimentally investigate this using the exceptional tunability
    of twisted bilayer (TB-) WSe2 by tracking the parameter regions where linear-in-T
    resistivity is found in dependency of displacement fields, filling, and magnetic
    fields. We find that even when the VHSs are tuned rather far away from the half-filling
    point and the Mott insulating transition is absent, the T-linear resistivity persists
    at the VHSs. When doping away from the VHSs, the T-linear behavior quickly transitions
    into a Fermi liquid behavior with a T2 relation. No apparent dependency of the
    linear-in-T resistivity, besides a rather strong change of prefactor, is found
    when applying displacement fields as long as the filling is tuned to the VHSs,
    including D~ 0.28 V/nm where a higher order VHS is expected. Intriguingly, such
    non-Fermi liquid linear-in-T resistivity persists even when magnetic fields break
    the spin-degeneracy of the VHSs at which point two linear in T regions emerge,
    for each of the split VHSs separately. This points to a mechanism of enhanced
    scattering at generic VHSs rather than only at high-order VHSs or by a quantum
    critical point during a Mott transition. Our findings provide insights into the
    many-body consequences arising out of VHSs, especially the non-Fermi liquid behavior
    found in moiré materials.
  description_type: abstract
  lang: und

## Creator

- name: LingNan Wei
  role: author
- name: Qiaoling Xu
  role: author
- name: Yangchen He
  role: author
- name: Qingxin Li
  role: author
- name: Yan Huang
  role: author
- name: Wang Zhu
  role: author
- name: Kenji Watanabe
  role: author
  orcid: https://orcid.org/0000-0003-3701-8119
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26
- name: Takashi Taniguchi
  role: author
  orcid: https://orcid.org/0000-0002-1467-3105
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26
- name: Martin Claassen
  role: author
- name: Daniel A. Rhodes
  role: author
- name: Dante M. Kennes
  role: author
- name: Lede Xian
  role: author
- name: Angel Rubio
  role: author
- name: Lei Wang
  role: author

## Contact agent



## Publisher

organization: Proceedings of the National Academy of Sciences

## Managing organization



## Keyword

- subject: Resistivity
  schema: not_defined
- subject: van Hove singularities
  schema: not_defined
- subject: twisted bilayer WSe2
  schema: not_defined

## Rights

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

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: Proceedings of the National Academy of Sciences
  issn: '10916490'
  volume: '121'
  issue: '16'
  article_number: e2321665121

## Conference



## Related item



## Funding

- identifier: BK20220066
  funder_name: National Science Foundation of Jiangsu Province
- identifier: 2022YFA1403501
  funder_name: National Key Research and Development Program of China
- identifier: 2022B1515120020
  funder_name: Guandong Basic and Applied Basic Research Foundation
- identifier: KF2021003
  funder_name: Hefei National Research Center for Physical Sciences at the Microscale
- identifier: "-"
  funder_name: Max Planck Partner group programme
- identifier: "-"
  funder_name: Max Planck-New York City Center for Non-Equilibrium Quantum Phenomena
- identifier: "-"
  funder_name: University of Wisconsin-Madison, Office of the Vice Chancellor for
    Research and Graduate Education
- identifier: 21H05233 and 23H02052
  funder_name: JSPS KAKENHI
- identifier: '12074173'
  funder_name: National Natural Science Foundation of china
- identifier: EXC 2004/1 - 390534769
  funder_name: Deutsche Forschungsgemeinschaft

## Instrument



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## Measurement method



## Specimen



## Chemical composition



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## Custom property



## Fileset

- id: 845b39fd-d0b6-49b9-91db-7af7b110fdde
  filename: wei-et-al-2024-linear-resistivity-at-van-hove-singularities-in-twisted-bilayer-wse2.pdf
  content_type: application/pdf
  size: 1640672
  md5: 52c7623bbefb6e5531810e56fb4ab826

## Thumbnail

fileset_id: 845b39fd-d0b6-49b9-91db-7af7b110fdde
filename: wei-et-al-2024-linear-resistivity-at-van-hove-singularities-in-twisted-bilayer-wse2.pdf