Low-temperature specific heat measurements on the Heusler-type compounds Fe2VGa have been performed. We observed the sample-dependent upturn in C/T at low temperatures which is attributed to the effect of magnetic impurities and/or clusters. After subtracting this extrinsic effect, the resulting γ still indicated heavy fermion behavior with an effective mass of about 20 times larger than the va...

We report the specific heat cN around the melting transition(s) of micrometer-sized superparamagnetic particles confined in two dimensions, calculated from fluctuations of positions and internal energy, and corresponding Monte Carlo simulations. Since colloidal systems provide single particle resolution, they offer the unique possibility to compare the experimental temperatures of the peak posi...

We apply the Mori-Zwanzig projection operator formalism to obtain an expression for the frequency dependent specific heat c(z) of a liquid. By using an exact transformation formula due to Lebowitz et al., we derive a relation between c(z) and K(t), the autocorrelation function of temperature fluctuations in the microcanonical ensemble. This connection thus allows to determine c(z) from computer...

Using Monte Carlo techniques, the two–dimensional site–diluted Ising model is studied. In particular, properties of the specific heat, its critical behaviour and the emergence of a non–singular maximum above the transition temperature at moderate concentration of defects, are discussed.

In this paper the propagation of harmonic plane waves in a homogeneous anisotropic magneto-piezothermoelastic diffusive body with fractional order derivative is studied. The governing equations for a homogeneous transversely isotropic body in the context of the theory of thermoelasticity with diffusion given by Sherief et al. [1] are considered as a special case. It is found that three types of...