Figure 1
From: Combinatorial investigation of spin-orbit materials using spin Peltier effect
Combinatorial investigation of DSHE-driven SPE. (a) Schematic illustration of the LIT measurements and sample system used for measuring the SPE. The sample comprises a composition-spread Pt-W film with meandered structure formed on an YIG substrate. H denotes the magnetic field vector. (b,c) LIT conditions for the SPE (b) and Joule-heating (c) measurements. In the SPE (Joule-heating) measurements, a square-wave-modulated a.c. charge current with zero offset (finite d.c. offset Jc/2), amplitude Jc (Jc/2), and frequency f is applied to the Pt-W film. (d) The SPE induced by the DSHE near the Pt-W/YIG interface. M, Jc, Js, and ∇T denote the magnetization vector of YIG, charge current applied to the Pt-W film, spatial direction of the spin current with the spin-polarization vector σ generated by the DSHE in Pt-W, and temperature gradient appearing as a result of the SPE-induced heat current, respectively. (e) Schematic illustration of the Pt-W/YIG sample from a top view. (f) Schematic procedure for fabricating the composition-spread Pt-W film on the YIG substrate.
