Observation of the spinful higher-order topology in multilayer Td-WTe2

Jekwan Lee, Jaehyeon Kwon, Eunho Lee, Jiwon Park, Soonyoung Cha, Kenji Watanabe, Takashi Taniguci, Moon Ho Jo, Hyunyong Choi

Research output: Chapter in Book/Report/Conference proceedingConference contribution


We propose evidence that the multilayer Td-WTe2 is a higher-order topological insulator. By measuring the Kerr effect using the graphene/WTe2 heterostructure, we revealed the existence of spinful topological hinge states protected by the time-reversal symmetry.

Original languageEnglish
Title of host publicationCLEO
Subtitle of host publicationQELS_Fundamental Science, QELS 2022
PublisherOptica Publishing Group (formerly OSA)
ISBN (Electronic)9781557528209
Publication statusPublished - 2022
EventCLEO: QELS_Fundamental Science, QELS 2022 - San Jose, United States
Duration: 2022 May 152022 May 20

Publication series

NameOptics InfoBase Conference Papers


ConferenceCLEO: QELS_Fundamental Science, QELS 2022
Country/TerritoryUnited States
CitySan Jose

Bibliographical note

Funding Information:
This study is supported by the National Research Foundation of Korea (NRF) through the government of Korea (Grant No. NRF-2021R1A2C3005905, NRF-2020M3F3A2A03082472, 2019R1A6A1A10073437), Creative materials Discovery program (Grant No. 2017M3D1A1040828), Scalable Quantum Computer Technology Platform Center (Grant No. 2019R1A5A1027055), and the Institute for Basic Science (IBS), Korea, under Project Code IBS-R014-G1-2018-A1. Part of this study has been performed using facilities at IBS Center for Correlated Electron Systems, Seoul National University.

Publisher Copyright:
© Optica Publishing Group 2022, © 2022 The Author(s)

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Mechanics of Materials


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