Sugiyama-Gutfreund-Weger Model and the Paraconductivity in the Mercury Chain Compound Hg_3−δAsF₆

抄録

The critical behavior of the paraconductivity of Hg_3−δAsF₆ is calculated on the basis of the model recently proposed by Sugiyama, Gutfreund and Weger [J. Phys. C19 (1986) 2519]. In contrast to their result, the paraconductivity behaves as ε^−1⁄2 with ε=ln (T⁄T_c), which is characteristic of three dimensional systems. The correlation length, the linearized TDGL equation and the GL free energy density up to |Δ|² are also obtained.