Classical size behavior of the Nernst-Ettingshausen effect induced by pulsed laser light in bismuth films

Abstract

The thermomagnetic response induced by laser pulses in Bi films at room temperature is studied in this work. We report the experimental dependence of the Nernst-Ettingshausen coefficient on the magnetic field and film thickness. A theoretical approach to explain the observed behavior is performed. The model considers three types of carriers, includes the surfaces scattering mechanisms, and reveals the influence of the inhomogeneous heating produced by the laser irradiation on the transport phenomena.