Interplay of crystal thickness and in-plane anisotropy and evolution of quasi-one-dimensional electronic character in

Lewis S. Hart, Surani M. Gunasekera, Marcin Mucha-Kruczyński, James L. Webb, José Avila, María C. Asensio, Daniel Wolverson

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Abstract

We study the valence band structure of 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  meV for the bulk to  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.

Original languageEnglish
Article number035421
JournalPhysical Review B
Volume104
Issue number3
Number of pages10
ISSN2469-9950
DOIs
Publication statusPublished - 2021

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