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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
; | | Date: |
29 Aug 2001 | | Journal: | Physica B 312-313C, 597 (2002) | | Subject: | Strongly Correlated Electrons | cond-mat.str-el | | 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. | | Source: | arXiv, cond-mat/0108488 | | Services: | Forum | Review | PDF | Favorites | |
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