2014/09/25 by Scott A. Bender, Yaroslav Tserkovnyak · 90 citations
Engineering · Materials Science · Physics and Astronomy · #Characterization and Applications of Magnetic Nanoparticles #Condensed matter physics #Engineering physics #Heat transfer #Magnetic Properties and Applications #Magnetic properties of thin films #Materials science #Physics #Thermodynamics #cond-mat.mes-hall
paper · pdf · doi:10.1103/physrevb.91.140402
published in Physical Review B 91(14) (American Physical Society)
arxiv created 2014/09/25 · openalex publication_date 2015/04/08 · arxiv updated 2015/04/16 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We study the role of thermal magnons in spin and heat transport across a normal-metal/insulating-ferromagnet interface, which is beyond an elastic electronic spin transfer. Using an interfacial exchange Hamiltonian, which couples spins of itinerant and localized orbitals, we calculate spin and energy currents for an arbitrary interfacial temperature difference and misalignment of spin accumulation in the normal metal relative to the ferromagnetic order. The magnonic contribution to spin current leads to a temperature-dependent torque on the magnetic order parameter; reciprocally, the coherent precession of the magnetization pumps spin current into the normal metal, the magnitude of which is affected by the presence of thermal magnons.