Fractional-power law susceptibility and specific heat of o-TaSs

K. Biljakovic; M. Miljak; D. Staresinic; J.C. Lasjaunias; J. Souletie; P. Monceau

doi:doi:10.1051/jp4:20020345

Numéro		J. Phys. IV France Volume 12, Numéro 9, November 2002


Page(s)		19 - 22
DOI		https://doi.org/10.1051/jp4:20020345

J. Phys. IV France 12 (2002) Pr9-19
DOI: 10.1051/jp4:20020345

Fractional-power law susceptibility and specific heat of o-TaSs

K. Biljakovic¹, M. Miljak¹, D. Staresinic¹, J.C. Lasjaunias², J. Souletie² and P. Monceau²

¹ Institute of Physics, P.0. Box 304, 10001 Zagreb, Croatia
² CRTBT-CNRS, BP. 166,38042 Grenoble cedex 9, France

Abstract
We report on the power-law dependence on temperature of the magnetic susceptibility and the specific heat of the CDW (charge density wave) system o-TaS ₃. All the evidences are in favor of a typical REHAC (random exchange Heisenberg antiferromagnetic chain) behaviour [I], however in the diluted limit of spins s=1/2. We propose a consistent microscopic explanation of the corresponding elementary excitations within a new state formed below the glass transition demonstrated recently in this system [2].