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arXiv · 0809.0694

Dynamics and transport of the Z_2 spin liquid: application to kappa-(ET)2Cu2(CN)3

Yang Qi·Cenke Xu·Subir Sachdev
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Abstract

We describe neutron scattering, NMR relaxation, and thermal transport properties of Z_2 spin liquids in two dimensions. Comparison to recent experiments on the spin S=1/2 triangular lattice antiferromagnet in kappa-(ET)2Cu2(CN)3 shows that this compound may realize a Z_2 spin liquid. We argue that the topological `vison' excitations dominate thermal transport, and that recent thermal conductivity experiments by M. Yamashita et al. have observed the vison gap.

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Yang Qi, Cenke Xu, Subir Sachdev. 2009-04-04. Dynamics and transport of the Z_2 spin liquid: application to kappa-(ET)2Cu2(CN)3. https://doi.org/10.1103/physrevlett.102.176401

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