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arXiv · 1310.3735

Low-temperature thermal conductivity of antiferromagnetic S = 1/2 chain material CuCl_2$\cdot$2((CH_3)_2SO)

W. P. Ke·J. Shi·F. B. Zhang·Z. Y. Zhao·X. Zhao·X. F. Sun
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Abstract

We study the heat transport of S = 1/2 chain compound CuCl_2$\cdot$2((CH_3)_2SO) along the b axis (vertical to the chain direction) at very low temperatures. The zero-field thermal conductivity (\kappa) shows a distinct kink at about 0.9 K, which is related to the long-range antiferromagnetic (AF) transition. With applying magnetic field along the c axis, \kappa(H) curves also show distinct changes at the phase boundaries between the AF and the high-field disordered states. These results indicate a strong spin-phonon interaction and the magnetic excitations play a role in the b-axis heat transport as phonon scatterers.

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W. P. Ke, J. Shi, F. B. Zhang, Z. Y. Zhao, X. Zhao, X. F. Sun. 2013-10-14. Low-temperature thermal conductivity of antiferromagnetic S = 1/2 chain material CuCl_2$\cdot$2((CH_3)_2SO). https://doi.org/10.1063/1.4859975

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