J. Phys. IV France
Volume 12, Numéro 9, November 2002
Page(s) 27 - 29

J. Phys. IV France
12 (2002) Pr9-27
DOI: 10.1051/jp4:20020347

Strong sensitivity to magnetic field of the low-temperature heat capacity of (TMTSF) 2PF 6

J.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 $\bf a$ or $\bf b'$ 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, || $\bf b'$ axis).

© EDP Sciences 2002