Picosecond spin Seebeck effect

Abstract

We report time-resolved magneto-optic Kerr effect measurements of the longitudinal spin Seebeck effect driven by an interfacial temperature difference between itinerant electrons and magnons. The measured time-evolution of spin accumulation induced by laser-excitation indicates transfer of angular momentum across Au/Y${}_3$Fe${}_5$O${}_{12}$ and Cu/Y${}_3$Fe${}_5$O${}_{12}$ interfaces on a picosecond time-scale. The product of spin-mixing conductance and interfacial spin Seebeck coefficient determined is of the order of $10^8$ A m${}^{-2}$ K${}^{-1}$.

16 pages, 4 figures, 1 table

References in corpus (3)

• Theory of magnon-driven spin Seebeck effect
• Spin convertance at magnetic interfaces
• Interfacial Spin and Heat Transfer between Metals and Magnetic Insulators

Cited by in corpus (3)

• A platform for time-resolved scanning Kerr microscopy in the near-field
• Ultrafast transport and relaxation of hot plasmonic electrons in metal-dielectric heterostructures
• Spin Seebeck effect and phonon energy transfer in heterostructures containing layers of a normal metal and a ferromagnetic insulator