Fig. 5: The temperature dependence of MP-anomaly for T < Tcomp and the magnetic field evolution of the magnon spectra of TbIG. | npj Spintronics

Fig. 5: The temperature dependence of MP-anomaly for T < Tcomp and the magnetic field evolution of the magnon spectra of TbIG.

From: Abnormal spin Seebeck effect near compensation temperature in Tb3Fe5O12 garnet films

Fig. 5

a The calculated SSC enhancement due to magnon polarons as a function of the magnetic field below the Tcomp. b The ΔT dependence of the position of magnon polaron μ0Hd (left axis) and the corresponding maximum intensity of SSC |Δζtot|max (right axis). c–e Magnon spectra of bulk TbIG in the low-frequency regime ( < 0.5 THz) for ΔT = −9.5 K and three typical magnetic fields μ0H1 = 0.2 T, μ0H2 = 0.5 T, and μ0H3 = 0.8 T denoted in (a). The orange curves represent the dispersion relations of the longitudinal (LA) and transverse (TA) acoustic phonon.

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