ECRYS - 93
J. Phys. IV France 03 (1993) C2-299-C2-302
The FI-SDW formation in (TMTSF)2ClO4 investigated in the infraredA.M. GERRITS1, T.J.B.M. JANSSEN1, J.S. BROOKS2, A. WITTLIN1, J.A.A.J. PERENBOOM1 and P.J.M. VAN BENTUM1
1 High Field Magnet Laboratory and Research Institute for Materials, University of Nijmegen, NL-6525 ED Nijmegen, The Netherlands
2 Department of Physics, Boston University and F.B. National Magnet Laboratory, M.I.T., Cambridge, Massachusetts 02139, U.S.A.
From a magneto-optical study on (TMTSF)2ClO4 we determine the SDW gap as a function of magnetic field and temperature. The transition temperatures found for the resolved FI-SDW subphases mimic the established phase diagram. Furthermore, the data confirm the existence of a collective excitation of the SDW condensate at relatively high frequency, which implies that this mode is pinned rather strongly to the lattice. In additon, we observed an interesting relaxation effect near the N=0 phase transition.
© EDP Sciences 1993