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α-As2Te3 as a platform for the exploration of the electronic band structure of single layer β-tellurene

Khalil, L
•
Forcella, PM
•
Kremer, G
altro
Ouerghi, A
2022
  • journal article

Periodico
PHYSICAL REVIEW. B
Abstract
Arsenic telluride, As2Te3, is a layered van der Waals (vdW) semiconducting material usually known for its thermoelectric properties. It is composed of layers stacked together via weak vdW interactions, which can consequently be exfoliated into thin two-dimensional layers. Here, we studied the electronic properties of the alpha phase of As2Te3 by using angle-resolved photoemission spectroscopy (ARPES) and density-functional theory (DFT). In addition to the spectroscopic signature of alpha-As2Te3, we were able to isolate anisotropic 2D electronic states, decoupled from the alpha-As2Te3 electronic structure, that we propose to ascribe to single layer (SL) -tellurene. Our findings are supported by theoretical investigations using DFT, which reproduce the main ARPES experimental features. Our work thereby proposes alpha-As2Te3 (100) surface as an interesting platform for the experimental exploration of the electronic band structure of SL -tellurene, which has been difficult to experimentally access otherwise.
DOI
10.1103/PhysRevB.106.125152
WOS
WOS:000870560500003
Archivio
https://hdl.handle.net/11390/1266806
info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85139398662
https://ricerca.unityfvg.it/handle/11390/1266806
Diritti
metadata only access
google-scholar
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