Nonequilibrium thermodynamics of the spin Seebeck and spin Peltier effects Article Swipe
YOU?
·
· 2016
· Open Access
·
· DOI: https://doi.org/10.1103/physrevb.93.184421
· OA: W2199723184
We study the problem of magnetization and heat currents and their associated\nthermodynamic forces in a magnetic system by focusing on the magnetization\ntransport in ferromagnetic insulators like YIG. The resulting theory is applied\nto the longitudinal spin Seebeck and the spin Peltier effects. By focusing on\nthe specific geometry with one YIG layer and one Pt layer, we obtain the\noptimal conditions for generating large magnetization currents into Pt or large\ntemperature effects in YIG. The theoretical predictions are compared with\nexperiments from the literature permitting to derive the values of the\nthermomagnetic coefficients of YIG: the magnetization diffusion length $l_M\n\\sim 0.4 \\, \\mu$m and the absolute thermomagnetic power coefficient $\\epsilon_M\n\\sim 10^{-2}$ TK$^{-1}$.\n