Theory of the thickness dependence of the charge density wave transition in 1T-TiTe2

Computational resources were granted by PRACE (Project No. 2017174186) and from IDRIS, CINES and TGCC (Grant eDARI 91202 and Grand Challenge Jean Zay). M C, F M, J S Z and L M acknowledge support from the European Union’s Horizon 2020 research and innovation programme Graphene Flagship under grant agreement No 881603.. M C and J S Z acknowledge support from Agence nationale de la recherche (Grant No. ANR-19-CE24-0028). F M and L M acknowledge support by the MIUR PRIN-2017 program, project number 2017Z8TS5B.