Angular dependence of magnetoresistance of several Bechgaard salts

We have studied the magnetoresistance anisotropy (at the ambient pressure) for different (TMTSF) 2 X crystals, with the current along the least conducting c direction, and the magnetic field rotated in the (a-b) plane. We compare and contrast the differences between the quenched (Q) and the relaxed (R) state for X=ClO 4 , and discuss the differences in the SDW state of X-PF 6 , X=ClO 4 (Q) and X=AsF 6 .