Study of the local structure of two dimensional CuxTiSe2 as a function of Cu intercalation

Cu intercalated TiSe2 shows superconductivity that has been proposed to be an example of an exciton condensate. Here, we propose to address the role of local structure in the quantum phenomena of these materials through x-ray absorption fine structure measurements on a series of CuxTiSe2 system in which the superconducting quantum state is tuned by Cu intercalation. The experimental approach involves the use of combined analysis of Cu, Se, Ti K-edge polarized EXAFS on single crystal samples. This will be assisted by the analysis of XANES spectra of the three edges to obtain information on the valence electronic structure and the local geometry.