Monney, Claude Schwier, Eike Fabian Garnier, Michael G. Mariotti, Nicolas Didiot, Clément Beck, Hans Aebi, Philipp Cercellier, H. Marcus, J. Battaglia, C. Berger, H. 2010-04-06 The charge-density-wave phase transition of 1T-TiSe₂ is studied by angle-resolved photoemission over a wide temperature range. An important chemical-potential shift which strongly evolves with temperature is evidenced. In the framework of the exciton condensate phase, the detailed temperature dependence of the associated order parameter is extracted. Having a mean-field-like behavior at low temperature, it exhibits a nonzero value above the transition, interpreted as the signature of strong excitonic fluctuations, reminiscent of the pseudogap phase of high-temperature superconductors. Integrated intensity around the Fermi level is found to display a trend similar to the measured resistivity and is discussed within the model. application/pdf https://folia.unifr.ch/global/documents/301709 https://folia.unifr.ch/documents/301709/files/aeb_tdp.pdf eng info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevB.81.155104 info:eu-repo/semantics/openAccess License undefined Physical Review B. - 2010, vol. 81, no. 15, p. 1551104 info:eu-repo/classification/udc/53 Temperature-dependent photoemission on 1T-TiSe₂: Interpretation within the exciton condensate phase model http://purl.org/coar/resource_type/c_6501