180 °-twisted bilayer ReSe2 as an artificial noncentrosymmetric semiconductor

S. Akatsuka; M. Sakano; T. Yamamoto; T. Nomoto; R. Arita; R. Murata; T. Sasagawa; K. Watanabe; T. Taniguchi; N. Mitsuishi; M. Kitamura; K. Horiba; K. Sugawara; S. Souma; T. Sato; H. Kumigashira; K. Shinokita; H. Wang; K. Matsuda; S. Masubuchi; T. Machida; K. Ishizaka

doi:10.1103/PhysRevResearch.6.L022048

180 °-twisted bilayer ReSe2 as an artificial noncentrosymmetric semiconductor

S. Akatsuka, M. Sakano, T. Yamamoto, T. Nomoto, R. Arita, R. Murata, T. Sasagawa, K. Watanabe, T. Taniguchi, N. Mitsuishi, M. Kitamura, K. Horiba, K. Sugawara, S. Souma, T. Sato, H. Kumigashira, K. Shinokita, H. Wang, K. Matsuda, S. MasubuchiT. Machida, K. Ishizaka

Department of Physics

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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.

Original language	English
Article number	L022048
Journal	Physical Review Research
Volume	6
Issue number	2
DOIs	https://doi.org/10.1103/PhysRevResearch.6.L022048
Publication status	Published - Apr 2024

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Akatsuka, S., Sakano, M., Yamamoto, T., Nomoto, T., Arita, R., Murata, R., Sasagawa, T., Watanabe, K., Taniguchi, T., Mitsuishi, N., Kitamura, M., Horiba, K., Sugawara, K., Souma, S., Sato, T., Kumigashira, H., Shinokita, K., Wang, H., Matsuda, K., ... Ishizaka, K. (2024). 180 °-twisted bilayer ReSe2 as an artificial noncentrosymmetric semiconductor. Physical Review Research, 6(2), Article L022048. https://doi.org/10.1103/PhysRevResearch.6.L022048

@article{21993ec35a83465190db8941a88d4941,

title = "180 °-twisted bilayer ReSe2 as an artificial noncentrosymmetric semiconductor",

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.",

author = "S. Akatsuka and M. Sakano and T. Yamamoto and T. Nomoto and R. Arita and R. Murata and T. Sasagawa and K. Watanabe and T. Taniguchi and N. Mitsuishi and M. Kitamura and K. Horiba and K. Sugawara and S. Souma and T. Sato and H. Kumigashira and K. Shinokita and H. Wang and K. Matsuda and S. Masubuchi and T. Machida and K. Ishizaka",

note = "Publisher Copyright: {\textcopyright} 2024 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.",

year = "2024",

month = apr,

doi = "10.1103/PhysRevResearch.6.L022048",

language = "English",

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Akatsuka, S, Sakano, M, Yamamoto, T, Nomoto, T, Arita, R, Murata, R, Sasagawa, T, Watanabe, K, Taniguchi, T, Mitsuishi, N, Kitamura, M, Horiba, K, Sugawara, K, Souma, S, Sato, T, Kumigashira, H, Shinokita, K, Wang, H, Matsuda, K, Masubuchi, S, Machida, T & Ishizaka, K 2024, '180 °-twisted bilayer ReSe2 as an artificial noncentrosymmetric semiconductor', Physical Review Research, vol. 6, no. 2, L022048. https://doi.org/10.1103/PhysRevResearch.6.L022048

TY - JOUR

T1 - 180 °-twisted bilayer ReSe2 as an artificial noncentrosymmetric semiconductor

AU - Akatsuka, S.

AU - Sakano, M.

AU - Yamamoto, T.

AU - Nomoto, T.

AU - Arita, R.

AU - Murata, R.

AU - Sasagawa, T.

AU - Watanabe, K.

AU - Taniguchi, T.

AU - Mitsuishi, N.

AU - Kitamura, M.

AU - Horiba, K.

AU - Sugawara, K.

AU - Souma, S.

AU - Sato, T.

AU - Kumigashira, H.

AU - Shinokita, K.

AU - Wang, H.

AU - Matsuda, K.

AU - Masubuchi, S.

AU - Machida, T.

AU - Ishizaka, K.

N1 - Publisher Copyright: © 2024 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.

PY - 2024/4

Y1 - 2024/4

N2 - 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.

AB - 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.

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U2 - 10.1103/PhysRevResearch.6.L022048

DO - 10.1103/PhysRevResearch.6.L022048

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SN - 2643-1564

VL - 6

JO - Physical Review Research

JF - Physical Review Research

IS - 2

M1 - L022048

ER -

180 °-twisted bilayer ReSe2 as an artificial noncentrosymmetric semiconductor

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