Heat generation by spin-polarized current in a quantum dot connected to spin battery and ferromagnetic lead*
Bai Xu-Fanga), Sun Lian-Liangb), Chi Fengc),d)†
       
Schematic plot of a quantum dot coupled to the left spin battery and the right ferromagnetic lead. The spin battery induces spin-dependent chemical potentials in the left lead. The heat results from the electron–phonon interaction, through which the energy associated with the spin-polarized current passing through the dot is transferred to the phonon bath in the form of heat.