J. Phys. IV France 10 (2000) Pr3-177-Pr3-182
Slow energy relaxation at low temperature in quasi-1D organic conductorsJ.C. Lasjaunias1, K. Biljakovic1, 2 and P. Monceau1
1 CRTBT-CNRS, associé à l'UJF, BP. 166, 38042 Grenoble Cedex 9, France e-mail : firstname.lastname@example.org & email@example.com
2 Institut of Physics, P.O. Box 304, HR-1000 Zagreb, Croatia e-mail : firstname.lastname@example.org
We present a study of the slow dynamics in the heat relaxation at very low temperature ( T < 1) in the nominally commensurate SDW compound (TMTTF)2Br, that we compare to the incommensurate SDW-(TMTSF)PF6. Instead of a broad distribution of relaxation times g( log σ ) in the PF6 salt typical 2of glassy materials, the dynamics in the Br salt reveals almost "discrete bands" in the relaxation spectrum. A saturation towards equilibrium is reached very rapidly (within ˜ 20 mn) at T ˜ 100 mK in comparison with PF6 (more than a few days for the same temperature).
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