Stephen R. Boona

Effect of the magnon dispersion on the longitudinal spin Seebeck effect in yttrium iron garnets

We study the temperature dependence of the longitudinal spin Seebeck effect (LSSE) in an yttrium iron garnet

Magnon-drag thermopower and Nernst coefficient in Fe, Co and Ni

{\mathrm{Y}}_{3}\mathrm{F}{\mathrm{e}}_{5}{\mathrm{O}}_{12}

Research Update: Utilizing magnetization dynamics in solid-state thermal energy conversion

(YIG)/Pt system for samples of different thicknesses. In this system, the thermal spin torque is magnon driven. The LSSE signal peaks at a specific temperature that depends on the YIG sample thickness. We also observe freeze-out of the LSSE signal at high magnetic fields, which we attribute to the opening of an energy gap in the magnon dispersion. We observe partial freeze-out of the LSSE signal even at room temperature, where

Magnon thermal mean free path in yttrium iron garnet

{k}_{B}T

Phonon-induced diamagnetic force and its effect on the lattice thermal conductivity

is much larger than the gap. This suggests that a subset of the magnon population with an energy below

Observation of spin Seebeck contribution to the transverse thermopower in Ni-Pt and MnBi-Au bulk nanocomposites

{k}_{B}{T}_{C} ({T}_{C}\ensuremath{\sim}40\phantom{\rule{0.16em}{0ex}}\mathrm{K})

Thermal spin transport and energy conversion

contributes disproportionately to the LSSE; at temperatures above

Putting a New Spin on Heat Flow

{T}_{C}

Comment on “Thermal properties of magnons in yttrium iron garnet at elevated magnetic fields”

, we label these magnons subthermal magnons. The

Viewpoint: Putting a New Spin on Heat Flow

T