OBSERVATION OF LATTICE INSTABILITY IN K_<0.3>MoO_3 BY ION-CHANNELING TECHNIQUES(EXPERIMENTS ON BLUE BORNZES, International Symposium on NONLINEAR TRANSPORT AND RELATED PHENOMENA IN INORGANIC QUASI ONE DIMENSIONAL CONDUCTORS)

Abstract

We have measured the backscattering yields of 1.00MeV He^+ ions for quasi one dimensional conductor K_<0.3>MoO_3 in the region from room temperature to 10OK. The temperature dependence of the backscattering yields exibits the softening of a certain phonon mode. The enhancement of the backscattering yields was observed when the applied electric field for the specimens was exceeded the threshold value for the onset of nonlinear conduction in this material. The possible origin of the enhancement is discussed.