Heat transport in SrCu₂(BO₃)₂ and CuGeO₃
classification
❄️ cond-mat.str-el
keywords
cugeoheatmagneticsrcutransportadditionalongconductivities
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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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