PECULIARITIES OF CARRIER SCATTERING AT THE BOUNDARY OF A NORMAL-METALAND A QUASI-ONE-DIMENSIONAL CONDUCTOR WITH A CHARGE-DENSITY-WAVE

Nonlinear effects at the interface between a normal metal and the quas i-one-dimensional conductor with a charge-density wave K0.3MoO3 are in vestigated experimentally. It is found that the scattering of the norm al carriers with energy E less than the Peierls gap Delta(p) gives ris e to an excess resistance of the N-CDW boundary. The character of the scattering is similar to Andreev reflection. In contrast to supercondu ctors, however, the sign of the charge of the reflected particle does not change. (C) 1996 American Institute of Physics.