Heat transport with phonon-electron energy exchange in Bi_2Te_3 circular thin layers

摘要

At steady state, we determine the temperature profile in a circular thin layer surrounding an inner nanodevice that acts as a source of heat. The analytical solution, under suitable boundary conditions, is obtained by means of a two-temperature model, which establishes the balance laws governing the spatial distribution of temperatures and heat fluxes. The main results are displayed when the circular thin layer is made of Bi_2Te_3 and are discussed in view of the second law of thermodynamics.