# Spinful hinge states in the higher-order topological insulators WTe2

https://mdr.nims.go.jp/datasets/1c668f84-24e0-4478-a2e5-1210d2cee6ca

## File

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## Id

1c668f84-24e0-4478-a2e5-1210d2cee6ca

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-02-14T07:41:08.059843Z

## Updated at

2025-02-15T03:30:58.271709Z

## Published at

2025-02-15T03:30:58.374323Z

## Doi



## First published url

https://doi.org/10.1038/s41467-023-37482-0

## Date published

2023-03-31

## Recorded date published



## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Spinful hinge states in the higher-order topological insulators WTe2
  title_type: original
  lang: en

## Description

- description: Higher-order topological insulator is a recently discovered topological
    phase of matters with generalized bulk-boundary correspondence. Td-WTe2, a non-centrosymmetric
    type-II Weyl semimetal, is a promising candidate to reveal topological hinge excitation
    in an atomically thin regime. However, with initial theories and experiments focusing
    on localized one-dimensional conductance only, no experimental reports exist on
    how the spin orientations are distributed over the helical hinges—this is critical,
    yet one missing puzzle. Here, we employ the magneto- optic Kerr effect to directly
    visualize the spinful characteristics of the hinge states in a few- layer Td-WTe2.
    By examining the spin polarization of electrons injected from WTe2 to graphene
    under external magnetic fields, we conclude that WTe2 hosts a spinful and helical
    topological hinge state protected by the time-reversal symmetry. Our finding may
    invoke stimuli to extend the previous spinless models and further provide a fertile
    diagnosis to the higher-order topology and Weyl physics in multidimensional solids.
  description_type: abstract
  lang: und

## Creator

- name: Jekwan Lee
  role: author
- name: Jaehyeon Kwon
  role: author
- name: Eunho Lee
  role: author
- name: Jiwon Park
  role: author
- name: Soonyoung Cha
  role: author
- name: Kenji Watanabe
  role: author
  orcid: https://orcid.org/0000-0003-3701-8119
  organization: National Institute for Materials Science
- name: Takashi Taniguchi
  role: author
  orcid: https://orcid.org/0000-0002-1467-3105
  organization: National Institute for Materials Science
- name: Moon-Ho Jo
  role: author
- name: Hyunyong Choi
  role: author

## Contact agent



## Publisher

organization: Springer Science and Business Media LLC

## Managing organization



## Keyword

- subject: Higher-order topological insulators
  schema: not_defined
- subject: spinful hinge states
  schema: not_defined
- subject: magneto-optic Kerr effect
  schema: not_defined

## Rights

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

## Other identifier(s)



## Data origin



## Embargo



## Journal

- title: Nature Communications
  issn: '20411723'
  volume: '14'
  issue: '1'
  article_number: '1801'

## Conference



## Related item



## Funding

- identifier: NRF-2020M3F3A2A03082472
  funder_name: National Research Foundation of Korea
- identifier: 2017M3D1A1040828
  funder_name: National Research Foundation of Korea

## Instrument



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## Specimen



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## Fileset

- id: 2353be6a-ab5b-4fa7-ac4f-7fae4f1ee3be
  filename: s41467-023-37482-0.pdf
  content_type: application/pdf
  size: 2522254
  md5: 2fe73ee30a6ae060ffbb8182c3ab2f7a

## Thumbnail

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filename: s41467-023-37482-0.pdf