Specific Heat of a Three-Dimensional Semimetal near a Zero-Temperature Phase Transition.

We derive the expression of the specific heat of a three-dimensional semimetal near a zero-temperature phase transition with dynamic exponent z. The result showed the occurrence of a non-Fermi behavior for z = 3, according to the general conjecture that the systems with d = z may present a T ln T contribution in the specific heat, which is typical for the non-Fermi behavior. [ABSTRACT FROM AUTHOR]