Session Q34: Focus Session: Frustrated and Low-D Magnetism -- Spins, Orbitals, and Phonons

11:15 AM–2:15 PM, Wednesday, March 17, 2010
Room: E144

Chair: Joachim Deisenhofer, Augsburg University

Abstract ID: BAPS.2010.MAR.Q34.13

Abstract: Q34.00013 : Phonon drag in thermal conductivity of antiferromagnets

2:03 PM–2:15 PM

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Authors:

We use Boltzmann equation approach to the thermal transport in low-dimensional antiferromagnets with spin-lattice coupling. We consider the limit of fast spin excitations, relevant to many compounds with $J>>\Theta_D$, where $\Theta_D$ is the Debye energy. We discuss the off-diagonal'' contribution to the heat current due to the drag of spin excitations on phonons. We calculate this effect for the one-dimensional spin chain materials.