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
M3 - Article
AN - SCOPUS:85195365301
SN - 2643-1564
VL - 6
JO - Physical Review Research
JF - Physical Review Research
IS - 2
M1 - L022048
ER -