Abstract
The transport characteristics of thermal-frequency phonons and specific heat C(T) in single-crystal solid solutions of aluminum–rare-earth garnets have been experimentally investigated in the helium-temperature range in the presence of low-energy paramagnetic excitations. It is shown that, under conditions of time-dependent propagation of a thermal pulse, equilibrium may occur in the “nonequilibrium phonons–two-level systems” system at certain values of sample length and thermostat temperature.
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This study was supported by the Ministry of Science and Higher Education of the Russian Federation within a State assignment.
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Translated by Yu. Sin’kov
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Salamatov, E.I., Taranov, A.V. & Khazanov, E.N. On the Possibility of Establishing Equilibrium in the “Phonons–Low-Energy Excitations” System during Time-Dependent Propagation of a Thermal Pulse in Solid Insulators at Helium Temperatures. J. Exp. Theor. Phys. 133, 340–346 (2021). https://doi.org/10.1134/S1063776121090053
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DOI: https://doi.org/10.1134/S1063776121090053