2024
DOI: 10.1103/physrevresearch.6.043111
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Stacking of charge-density waves in 2HNbSe2 bilayers

F. Cossu,
D. Nafday,
K. Palotás
et al.

Abstract: We employ electronic-structure calculations to investigate the charge-density waves and periodic lattice distortions in bilayer 2H−NbSe2. We demonstrate that the vertical stacking can give rise to a variety of patterns that may lower the symmetry of the charge-density waves exhibited separately by the two composing 1H−NbSe2 monolayers. The general tendency to a spontaneous symmetry breaking observed in the ground state and the first excited states is shown to originate from a non-negligible interlayer couplin… Show more

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