Physical Review Letters · 1968 · 18 citations · 13 references
Natural SciencesChemistryPhysicsCondensed Matter PhysicsSolid State PhysicsThermodynamicsElectron-phonon InteractionsRelaxation MechanismsThermal Properties Of MaterialsMagnetic Specific HeatPhonon DynamicsPhonon Thermal ConductivityPhonon-induced RelaxationSpecific Heat CapacitySpin RelaxationSpin-lattice RelaxationSpin-lattice Relaxation Effects
The hitherto unexplained extra specific heat and fast spin-lattice relaxation in cerium ethyl sulfate are explained by an anomalous phonon spectrum calculated using thermodynamic Green's functions for incoherent spins and phonons.
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Double-time Green functions in statistical physics
D. N. Zubarev · Uspekhi Fizicheskih Nauk · 1960 · 1.4K citations · Full text