Angular magnetoresistance study of the organic superconductor (TMTSF)_2ReO_4

摘要

We have studied the angle dependent magnetoresistance of the title compound when the magnetic field rotates in the bc plane. Lebed-type resonance is clearly observed both in R_(zz) and R_(xx). The most remarkable finding is that the resonance effects take place only at the angles corresponding to p/q = odd integers. Also found are additional fast oscillatory parts superposed on the Lebed oscillations, which are clearer in R_(zz) than in R_(xx). Pressure dependence and the effect of mixed anion orderings are investigated.