180 °-twisted bilayer <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msub><mml:mi>ReSe</mml:mi><mml:mn>2</mml:mn></mml:msub></mml:math> as an artificial noncentrosymmetric semiconductor-Reference-Cited by-同舟云学术

180 °-twisted bilayer ReSe2 as an artificial noncentrosymmetric semiconductor

Published:2024-06-03 Issue:2 Volume:6 Page:
ISSN:2643-1564
Container-title:Physical Review Research
language:en
Short-container-title:Phys. Rev. Research

Author:

Akatsuka S.¹,Sakano M.¹^ORCID,Yamamoto T.¹^ORCID,Nomoto T.¹^ORCID,Arita R.¹²^ORCID,Murata R.³,Sasagawa T.³,Watanabe K.⁴^ORCID,Taniguchi T.⁴^ORCID,Mitsuishi N.²^ORCID,Kitamura M.⁵⁶,Horiba K.⁶,Sugawara K.⁷⁸,Souma S.⁷,Sato T.⁷^ORCID,Kumigashira H.⁷^ORCID,Shinokita K.⁹^ORCID,Wang H.⁹,Matsuda K.⁹^ORCID,Masubuchi S.¹^ORCID,Machida T.¹,Ishizaka K.¹²

Affiliation:

1. The University of Tokyo

2. RIKEN Center for Emergent Matter Science

3. Tokyo Institute of Technology

4. National Institute for Materials Science

5. High energy Accelerator Research Organization (KEK)

6. National Institute for Quantum Science and Technology

7. Tohoku University

8. Japan Science and Technology Agency

9. Kyoto University

Abstract

We have fabricated a 180 °-twisted bilayer ReSe2 by stacking two centrosymmetric monolayer ReSe2 flakes in opposite directions, which is expected to cause the loss of spatial inversion symmetry. We successfully observed spatial inversion-symmetry breaking, in contrast to the monolayer and natural bilayer ReSe2 by the second harmonic generation. ARPES measurements further revealed emergent band dispersions in the 180 °-twisted bilayer ReSe2, distinct from those of the monolayer ReSe2 used in its fabrication. The band calculation shows the finite lifting of spin degeneracy (∼50 meV) distinct from natural monolayer and bilayer ReSe2, which demonstrates that the spin-momentum locked state leading to Berry curvature related phenomena can be realized even with the stacking of centrosymmetric monolayers.

Published by the American Physical Society

2024

Funder

Core Research for Evolutional Science and Technology

Japan Science and Technology Agency

Japan Society for the Promotion of Science

Ministry of Education, Culture, Sports, Science and Technology

Publisher

American Physical Society (APS)

Link

http://harvest.aps.org/v2/journals/articles/10.1103/PhysRevResearch.6.L022048/fulltext

Reference47 articles.

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5. Coupled Spin and Valley Physics in Monolayers ofMoS2and Other Group-VI Dichalcogenides

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1. 180 °-twisted bilayer ReSe2 as an artificial noncentrosymmetric semiconductor;Physical Review Research;2024-06-03