High-resolution angle-resolved photoemission investigation of the quasiparticle scattering processes in a model Fermi liquid: 1T-TiTe2 - art. no. 115102

We present a combined angle-resolved photoemission spectroscopy and resisti vity study of the model Fermi liquid system 1T-TiTe2. From the analysis of the quasiparticle spectral line shape we identify and separately evaluate t he electron-electron. electron-phonon, and impurity scattering contribution s to the quasiparticle lifetime. There is a clear correspondence between sp ectroscopic and transport data. A residual low-temperature spectral linewid th (Gamma (o)=17 meV) indicates that the three-dimensional nature of the el ectronic states cannot be neglected even in this quasi-two-dimensional mate rial.