J. Phys. IV France 12 (2002) Pr9-27
Strong sensitivity to magnetic field of the low-temperature heat capacity of (TMTSF) 2PF 6J.C. Lasjaunias1, S. Sahling2, K. Biljakovic3 and P. Monceau1
1 Centre de Recherches sur les Très Basses Températures, CNRS, BP. 166, 38042 Grenoble cedex 9, France
2 Institut für Angewandfe Physik, T.U. Dresden, Germany
3 Institute of Physics, P.O. Box 304, 10001 Zagreb, Croatia
We have observed a very large sensitivity to low magnetic field (i.e. below 0.5 Tesla) of the low-temperature specific heat Cp of the quasi-1D compound (TMTSF) 2PF 6 in its spin-density wave (SDW) ground state. This effect is independent on the field direction compared to that of the crystal orientation (with H || either to or axis), and hence does not seem to be related in a direct way to the electronic SDW itself. In addition, we did not detect any feature in Cp at the spin-flop transition (at H=0.45 T, || axis).
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