Drastic enhancement of magnon thermal conductivity in the Bose-Einstein condensed state of TlCuCl$_3$

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dc.creatorKudo, K.
dc.creatorYamazaki, M.
dc.creatorKawamata, T.
dc.creatorNoji, T.
dc.creatorKoike, Y.
dc.creatorNishizaki, T.
dc.creatorKobayashi, N.
dc.date2003-12-02
dc.date2004-09-16
dc.date.accessioned2026-07-07T02:55:07Z
dc.date.available2026-07-07T02:55:07Z
dc.descriptionWe have measured the thermal conductivity of a TlCuCl$_3$ single crystal in magnetic fields up to 14 T. It has been found that the temperature dependence of the thermal conductivity exhibits a sharp peak at 4 K in zero field, which is suppressed by the application of magnetic fields up to 7 T. The peak is concluded to be attributable to the enhancement of the thermal conductivity due to phonons because of the formation of a spin-gap state. In high magnetic fields above 7 T, on the other hand, another sharp peak appears around 4 K and this is enhanced with increasing magnetic field. This peak is regarded as being attributable to the enhancement of the thermal conductivity due to magnons and/or phonons because of the drastic extension of the mean free path of magnons and/or phonons in the Bose-Einstein condensed state.
dc.description4 pages, 4 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0312063
dc.identifierhttp://arxiv.org/abs/cond-mat/0312063
dc.identifierJournal of the Physical Society of Japan 73, 2358 (2004)
dc.identifierdoi:10.1143/JPSJ.73.2358
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/22826
dc.subjectStrongly Correlated Electrons
dc.subjectStatistical Mechanics
dc.titleDrastic enhancement of magnon thermal conductivity in the Bose-Einstein condensed state of TlCuCl$_3$
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