Specific heat and magneto-thermal oscillations of two-dimensional electron gas in a magnetic field

Abstract

Specific heat and magneto-thermal oscillations of a two-dimensional electron gas in semiconductor superlattice are calculated as functions of a quantising magnetic field. The specific heat consists of an intralevel and an interlevel contribution, both strongly oscillating. At low temperatures the electronic specific heat is comparable to that of the lattice. Temperature oscillations of a thermally isolated sample in a magnetic field are shown to be of the order of 1 K at low temperatures, which is 10 3 times larger than 3-D systems.