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Heat transport in SrCu_2(BO_3)_2 and CuGeO_3

M. Hofmann·T. Lorenz·A. Freimuth·G. S. Uhrig·H. Kageyama·Y. Ueda·G. Dhalenne·A. Revcolevschi
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Abstract

In the low dimensional spin systems $SrCu_2(BO_3)_2$ and $CuGeO_3$ the thermal conductivities along different crystal directions show pronounced double-peak structures and strongly depend on magnetic fields. For $SrCu_2(BO_3)_2$ the experimental data can be described by a purely phononic heat current and resonant scattering of phonons by magnetic excitations. A similar effect seems to be important in $CuGeO_3$, too but, in addition, a magnetic contribution to the heat transport may be present.

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M. Hofmann, T. Lorenz, A. Freimuth, G. S. Uhrig, H. Kageyama, Y. Ueda, G. Dhalenne, A. Revcolevschi. 2001-08-29. Heat transport in SrCu_2(BO_3)_2 and CuGeO_3. https://doi.org/10.1016/s0921-4526(01)01185-1

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