Electrical resistivity, high-resolution thermal expansion, and heat capacity measurements of the charge-density wave compoundγ−Mo4O11

Abstract

Electrical resistivity of $\ensuremath{\gamma}\text{\ensuremath{-}}{\text{Mo}}_{4}{\text{O}}_{11}$ single crystals was measured using the Montgomery method. The results show a much smaller anisotropy than previously reported. High-resolution linear thermal expansion measurements reveal strongly anisotropic behavior. Both electrical resistivity and thermal expansion measurements suggest that this material should be classified as quasi-two dimensional. The thermal expansion coefficients exhibit an anomaly due to the charge-density wave transition along the $b$ and $c$ axes at $\ensuremath{\sim}100\text{ }\text{K}$.