J. Phys. I France 3 (1993) 1501-1505
Motional narrowing of the nuclear magnetic resonance line by the sliding of spin-density wavesE. Barthel1, G. Quirion1, P. Wzietek1, D. Jérome1, J. B. Christensen2, M. Jørgensen2 and K. Bechgaard2
1 Laboratoire de Physique des Solides, Université Paris-Sud-CNRS, F-91405 Orsay, France
2 CISMI, University of Copenhagen, Blegdamsvej 21, DK-2100 Copenhagen, Denmark
(Received 18 January 1993, Accepted 4 May 1993)
We report on a study of the electrical conductivity and 13C-NMR in the nonlinear conductivity regime in the spin-density wave (SDW) phase of (TMTSF) 2PF 6 (TMTSF stands for tetramethyltetraselenafulvalene). The narrowing of the NMR line demonstrates that there is a bulk motion of the SDW. We find a qualitative agreement between the nonlinear current and the minimum current necessary to narrow the NMR line in the simplest model of SDW conduction.
© Les Editions de Physique 1993