1H NMR studies in the regime of the field-induced spin-density wave phases of (TMTSF)2PF6

We report 1H proton spin-lattice relaxation measurements T1-1 on pressurized (TMTSF)2PF6 in high magnetic fields. Maxima in T1-1 identify the phase transition to the field-induced spin-density wave (FISDW) state. Fluctuation effects are evident at temperatures above the transition, and vanish continuously in strength as the field is lowered to the critical field Bc for the onset of the FISDW cascade