High frequency ESR investigation on dynamical charge disproportionation and spin gap excitation in NaV_2O_5

H. Nojiri, S. Luther, M. Isobe +2

A significant frequency dependence of the ESR line width is found in NaV_2O_5 between 34-100 K and the line width increases as the resonance frequency is increased from 95 GHz to 7…