Resonant phonon scattering in a coupled spin-phonon system

Sheard, F. W.; Toombs, G. A.

doi:10.1016/0038-1098(73)90320-7

Cited by 25 publications

(4 citation statements)

References 13 publications

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“…ω D is Debye frequency. The result we have obtained here is consistent with earlier computations using other diagrammatic techniques and Born's approximation [28][29][30]. Eq.…”

supporting

confidence: 92%

Phonon Thermal Hall Effect in a non-Kramers Paramagnet

Guo¹

2023

Preprint

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With an increasing number of experiments observing phonon thermal Hall effect in magnets, it is theoretically desired to have a minimal model for the phonon thermal Hall effect. In this work, we study a simple model of acoustic phonons and uncorrelated paramagnetic doublets. When the doublets are non-Kramers, a linear pseudospin-phonon coupling is allowed by time-reversal symmetry and yields resonant phonon-pseudospin scattering. We compute the thermal longitudinal and Hall conductivities of the model and found qualitative agreement with recent experiments in Pr2Ir2O7 [1].

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“…ω D is Debye frequency. The result we have obtained here is consistent with earlier computations using other diagrammatic techniques and Born's approximation [28][29][30]. Eq.…”

supporting

confidence: 92%

Phonon Thermal Hall Effect in a non-Kramers Paramagnet

Guo¹

2023

Preprint

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“…At the lowest temperatures a sheet-like fault scattering term, Cω 2 , was introduced to account for the much lower magnitude of κ in the Cu compound -this term is attributed to scattering from twin boundaries. Resonant scattering from the two-level magnetic system was represented as, [25][26][27]…”

Section: Modeling the κ(T ) Datamentioning

confidence: 99%

Phonon–spin scattering and magnetic heat transport in the quasi-one-dimensionalspin−12antiferromagnetic chain compoundCuSb2O6

et al. 2015

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We report measurements of thermal conductivity (κ) on single crystals of the quasi-onedimensional spin-1/2 anitferromagnetic (AF) chain compound CuSb2O6 and its non-magnetic analog ZnSb2O6 in the temperature range 5K ≤ T ≤ 300K. A substantially lower κ for CuSb2O6 compared to that of ZnSb2O6 has its origin in resonant phonon-spin scattering involving excitation of a two-level system (energy scale ∼ 100 K) associated with the onset of local spin order at T ≤ 150 K. Anisotropy in κ for the CuSb2O6 also emerges at T ≤ 150K and might be associated with a magnetic contribution to heat transport. A magnetic mean-free-path comparable to that of other spin-1/2 linear-chain compounds (∼ 0.3 µm) is implied.

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“…The spin-phonon interaction results in creation or annihilation of a phonon to accept/provide the energy associated with a spin flip and can remove or scatter a band of phonons from the heat current [33] and reduce the thermal conductivity similar to the behavior observed in these experiments. Raman spectroscopy can provide additional insights in the spin-phonon relaxation behavior and support the magneto thermal transport measurements reported earlier.…”

Section: Resultsmentioning

confidence: 62%