J. Phys. IV France
Volume 114, April 2004
Page(s) 113 - 114

J. Phys. IV France
114 (2004) 113
DOI: 10.1051/jp4:2004114023

Unusual magnetic field-induced transition in the low temperature ( T< 1 K) SDW ground state of (TMTSF) 2PF 6

J.C. Lasjaunias1, 1, S. Sahling2, K. Biljakovic3 and P. Monceau1, 4

1  CRTBT-CNRS, BP. 166, 38042 Grenoble Cedex 9, France
2  Institut für Angewandte Physik, IAPD, T.U. Dresden, 01069 Dresden, Germany
3  Institute of Physics, PO BOX 304, 10001 Zagreb, Croatia
4  Laboratoire Leon Brillouin, CEA-CNRS, CEA Saclay, 91191 Saclay Cedex, France

We have observed a strong sensitivity to low magnetic field ( $\rm H<0.5$ T) of the low-temperature specific heat of (TMTSF) 2PF 6 in its spin-density wave ground state. The mostly pronounced manifestation is a sharp maximum at  $\rm H = 0.2$ T in the amplitude of Shottky anomaly contribution which dominates the heat capacity below 0.3 K. This effect is independent of the field direction for H // a or b' crystal axis. Key words. One-dimensional Conductors, Density waves, Glassy State, Magnetic field.

© EDP Sciences 2004