Work

Band nesting and the optical response of two-dimensional semiconducting transition metal dichalcogenides

Year: 2013

Type: article

Abstract: We have studied the optical conductivity of two-dimensional (2D) semiconducting transition metal dichalcogenides using ab initio density functional theory. We find that this class of materials presents large optical response due to the phenomenon of band nesting. The tendency towards band nesting is enhanced by the presence of van Hove singularities in the band structure of these materials. Given that 2D crystals are atomically thin and naturally transparent, our results show that it is possible to have strong photon-electron interactions even in 2D.

Source: Physical Review B

DOI: 10.1103/physrevb.88.115205

Authors: A. Carvalho, R. M. Ribeiro, A. H. Castro Neto

Institutions: National University of Singapore, University of Minho

Language: English

Topic: 2D Materials and Applications

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

Open Access status: green

Funder: Fundação para a Ciência e a Tecnologia

Awards: TWO-DIMENSONAL STRUCTURES AND DEVICES, G2233152759