Electronic bandstructure and van der Waals coupling of ReSe₂ revealed by high-resolution angle-resolved photoemission spectroscopy.

ABSTRACT: ReSe₂ and ReS₂ are unusual compounds amongst the layered transition metal dichalcogenides as a result of their low symmetry, with a characteristic in-plane anisotropy due to in-plane rhenium 'chains'. They preserve inversion symmetry independent of the number of layers and, in contrast to more well-known transition metal dichalcogenides, bulk and few-monolayer Re-TMD compounds have been proposed to behave as electronically and vibrational decoupled layers. Here, we probe for the first time the electronic band structure of bulk ReSe₂ by direct nanoscale angle-resolved photoemission spectroscopy. We find a highly anisotropic in- and out-of-plane electronic structure, with the valence band maxima located away from any particular high-symmetry direction. The ef

SUBMITTER: Hart LS 

PROVIDER: S-EPMC5506037 | biostudies-literature | 2017 Jul

REPOSITORIES: biostudies-literature