2020/12/31 by Lewis R. Hart, Lewis S. Hart, Surani M. Gunasekera +9 · 8 citations
Chemistry · Engineering · Materials Science · Mathematics · Physics and Astronomy · #2D Materials and Applications #Anisotropy #Band gap #Chalcogenide Semiconductor Thin Films #Character (mathematics) #Chemistry #Condensed matter physics #Crystallography #Density functional theory #Electronic band structure #Electronic structure #Geometry #Materials science #Mathematics #Nuclear magnetic resonance #Optics #Perpendicular #Photoemission spectroscopy #Physics #Quantum Dots Synthesis And Properties #Quantum mechanics #Rhenium #Spectroscopy #Valence (chemistry) #Valence band #X-ray photoelectron spectroscopy #cond-mat.mes-hall #cond-mat.mtrl-sci
paper · pdf · doi:10.1103/physrevb.104.035421
published in Physical review. B./Physical review. B 104(3) (American Physical Society)
openalex created_date 2021/01/05 · openalex publication_date 2021/07/15 · arxiv created 2021/08/10 · arxiv updated 2021/08/11 · openalex updated_date 2026/08/05
We study the valence band structure of ReSe2 crystals with varying thickness down to a single layer using nanoscale angle-resolved photoemission spectroscopy and density functional theory. The width of the top valence band in the direction perpendicular to the rhenium chains decreases with decreasing number of layers, from \ensuremath∼200 meV for the bulk to \ensuremath∼80 meV for monolayer. This demonstrates increase of in-plane anisotropy induced by changes in the interlayer coupling and suggests progressively more one-dimensional character of electronic states in few-layer rhenium dichalcogenides.