Abstract
We report a 77Se and 63Cu nuclear magnetic resonance (NMR) investigation on the charge-density-wave (CDW) superconductorCuxTiSe2 (x = 0.05 and0.07). At high magnetic fields where superconductivity is suppressed, the temperature dependence of 77Se and 63Cu spin–lattice relaxationrates 1/T1 follow a linearrelation. The slope of 77Se 1/T1 versus T increases with the Cu doping. This can be described by a modified Korringa relation whichsuggests the significance of electronic correlations and the Se 4p- and Ti 3d-bandcontribution to the density of states at the Fermi level in the studied compounds.
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