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OnderzoekZernike (ZIAM)SSMEPalstra Group

Spin caloritronics

The spin Seebeck effect (SSE) is of much interest in the modern era of the field of spin caloritronics due to its unique property of thermal actuation of pure spin currents in magnetic. In the SSE, the efficiently of creation of the spin current density across the interface under a certain gradient {\grad T} depends on the real part of the spin mixing conductance Gr. The spin mixing conductance Gr and therefore the SSE are very sensitive to the interface quality.

The goal of the project is to optimize the interface parameters to improve the spin mixing conductance and therefore the efficiency of the SSE.

Left: Detection of spin current by the inverse spin Hall effect in SSE process. The orange arrows indicate the spin polarization at the interface of the Pt/YIG system. M, JS and EISHE represent the magnetization of YIG, spatial direction of the thermally generated spin current, and electric field induced by the ISHE, respectively. θ represents the angle between the external magnetic field H in the x-y plane and the x axis. Middle: AFM height image of a single crystal YIG
Left: Detection of spin current by the inverse spin Hall effect in SSE process. The orange arrows indicate the spin polarization at the interface of the Pt/YIG system. M, JS and EISHE represent the magnetization of YIG, spatial direction of the thermally generated spin current, and electric field induced by the ISHE, respectively. θ represents the angle between the external magnetic field H in the x-y plane and the x axis. Middle: AFM height image of a single crystal YIG
Last modified:10 March 2016 2.52 p.m.