# Impact of electron-hole correlations on the $1T\text{-}{\mathrm{TiSe}}_{2}$ electronic structure

• Monney, Gaël Département de Physique and Fribourg Center for Nanomaterials, Université de Fribourg, Switzerland
• Monney, Claude Department of Physics, University of Zürich, Switzerland
• Hildebrand, Baptiste Département de Physique and Fribourg Center for Nanomaterials, Université de Fribourg, Switzerland
2015
Published in:
• Physical Review Letters. - 2015, vol. 114, no. 8, p. 086402
English Several experiments have been performed on 1T−TiSe2 in order to identify whether the electronic structure is semimetallic or semiconducting without reaching a consensus. In this Letter, we theoretically study the impact of electron-hole and electron-phonon correlations on the bare semimetallic and semiconducting electronic structure. The resulting electron spectral functions provide a direct comparison of both cases and demonstrate that 1T−TiSe2 is of predominant semiconducting character with some spectral weight crossing the Fermi level.
Faculty
Faculté des sciences et de médecine
Department
Département de Physique
Language
• English
Classification
Physics