Third Angular Effect of Magnetoresistance in Quasi-One-Dimensional Conductors

Abstract

We theoretically and experimentally study a new type of angular effect of magnetoresistance in quasi-one-dimensional (Q1D) conductors. It is a kink structure on the angular dependence of interlayer magnetoresistance when the magnetic field is rotated in the most conducting plane. This effect originates from the appearance or vanishing of closed orbits on the sheetlike Fermi surface. This is ``the third angular effect'' in the Q1D conductors following the Lebed resonance and the Danner-Chaikin oscillation.