Longitudinal spin-Seebeck effect in sintered polycrystalline „Mn,Zn…Fe2O4

摘要

This paper reports that the longitudinal spin-Seebeck effect appears even in a sinterednpolycrystalline Mn-Zn ferrite u0004u0002Mn,Znu0003Fe2O4u0005 slab. The effect drives a spin current flowing acrossnan interface between the u0002Mn,Znu0003Fe2O4 slab and an attached Pt film along a temperature gradientnand it generates electric voltage via the inverse spin-Hall effect in the Pt film. Since the observednphenomenon enables thermal generation of electric voltage from commonly used polycrystallineninsulators, it can be used as a versatile and low-cost thermoelectric generator. © 2010 AmericannInstitute of Physics. u0004doi:10.1063/1.3533397