2001/08/29 by M. Hofmann, Martin R. Hofmann, T. Lorenz +9
Earth and Planetary Sciences · Physics and Astronomy · #Advanced Condensed Matter Physics #Composite material #Condensed matter physics #Current (fluid) #Germanate #High-pressure geophysics and materials #Magnetic field #Materials science #Optics #Phonon #Phonon scattering #Physics #Physics of Superconductivity and Magnetism #Scattering #Thermal #Thermal conductivity #Thermodynamics #cond-mat.str-el
paper · pdf · doi:10.1016/s0921-4526(01)01185-1
published as Physica B 312-313C, 597 (2002) · 4 pages, 2 figures; appears in the proceedings of the SCES2001 (Physica B)
arxiv created 2001/08/29 · openalex publication_date 2002/03/01 · arxiv updated 2016/08/31 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
In the low dimensional spin systems SrCu2(BO3)2 and CuGeO3 the thermal conductivities along different crystal directions show pronounced double-peak structures and strongly depend on magnetic fields. For SrCu2(BO3)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 CuGeO3, too but, in addition, a magnetic contribution to the heat transport may be present.