Thermal Conductivity of the Spin Peierls Compound CuGeO_3
The thermal conductivity of the Spin-Peierls (SP) compound CuGeO_3 was measured in magnetic fields up to 16 T. Above the SP transition, the heat transport due to spin excitations causes a peak at around 22 K, while below the transition the spin excitations rapidly diminish and the heat transport is...
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| Veröffentlicht in: | arXiv.org 1998-05 |
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| creator | Ando, Yoichi Takeya, J Sisson, D L Doettinger, S G Tanaka, I Feigelson, R S Kapitulnik, A |
| description | The thermal conductivity of the Spin-Peierls (SP) compound CuGeO_3 was measured in magnetic fields up to 16 T. Above the SP transition, the heat transport due to spin excitations causes a peak at around 22 K, while below the transition the spin excitations rapidly diminish and the heat transport is dominated by phonons; however, the main scattering process of the phonons is with spin excitations, which demonstrates itself in an unusual peak in the thermal conductivity at about 5.5 K. This low-temperature peak is strongly suppressed with magnetic fields in excess of 12.5 T. |
| doi_str_mv | 10.48550/arxiv.9805099 |
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| subjects | Excitation Heat conductivity Heat transfer Magnetic fields Magnetism Phonons Temperature Thermal conductivity |
| title | Thermal Conductivity of the Spin Peierls Compound CuGeO_3 |
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