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Angular Momentum Conservation and Phonon Spin in Magnetic Insulators

By Andreas Rückriegel and others
We develop a microscopic theory of spin-lattice interactions in magnetic insulators, separating rigid-body rotations and the internal angular momentum, or spin, of the phonons, while conserving the total angular momentum. In the low-energy limit, the microscopic couplings are mapped onto experimentally accessible magnetoelastic constants. We show that the transient phonon... Show more
March 3, 2020
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Angular Momentum Conservation and Phonon Spin in Magnetic Insulators
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