Journal
PHYSICAL REVIEW LETTERS
Volume 114, Issue 8, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.114.086402
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Funding
- Fonds National Suisse (FNS) pour la Recherche Scientifique
- FNS [PZ00P2_154867]
- Swiss National Science Foundation (SNF) [PZ00P2_154867] Funding Source: Swiss National Science Foundation (SNF)
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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.
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