Anomalous Hall effect for the phonon heat conductivity in paramagnetic dielectric

Details Anomalous Hall effect for the phonon heat conductivity in paramagnetic dielectric Anomalous Hall effect for the phonon heat conductivity in paramagnetic dielectric

2007-07-17

arxiv.org/abs/0707.2565v3

Physics

Condensed Matter

Other Condensed Matter

5 pages; typos and abstract corrected

Scientific paper

10.1103/PhysRevLett.100.145902

The theory of anomalous Hall effect for the heat transfer in a paramagnetic dielectric, discovered experimentally in [1], is developed. The appearance of the phonon heat flux normal to both the temperature gradient and the magnetic field is connected with the interaction of magnetic ions with the crystal field oscillations. In crystals with an arbitrary phonon spectrum this interaction creates the elliptical polarization of phonons. The kinetics related to phonon scattering induced by the spin-phonon interaction determines an origin of the off-diagonal phonon density matrix. The combination of the both factors is decisive for the phenomenon under consideration.

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