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  • 1
    Electronic Resource
    Electronic Resource
    Thermal conductivity of the spin-Peierls compound CuGeO3 (1997)
    Springer
    JETP letters 66 (1997), S. 868-872 
    Details
    ISSN: 1090-6487
    Keywords: 72.20.-i ; 72.80.Sk ; 75.80.+q
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The thermal conductivity of the pure and zinc-doped spin-Peierls compound CuGeO3 is investigated for the first time. Characteristic features reflecting the changes in the phonon spectrum of the crystals are observed in the k(T) curves at a transition into the dimerized state in CuGeO3 at T sp =14.2 K and in Cu0.98Zn0.02GeO3 at T sp =10.6 K. Near the spin-Peierls transition temperature T sp the thermal conductivity of Cu0.98Zn0.02GeO3 (k=3 W/m·K) is much less than the thermal conductivity of CuGeO3 (k=21.5 W/m·K).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1134/1.567611
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Magnetostriction of the spin-Peierls compound CuGeO3 (1996)
    Springer
    JETP letters 64 (1996), S. 166-170 
    Details
    ISSN: 1090-6487
    Keywords: 75.30.Kz ; 75.80.+q
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The longitudinal and transverse magnetostriction λ of the spin-Peierls compound CuGeO3 in the b-c plane is measured in magnetic fields up to 20 T both above and below the transition temperature T sp=14.3K. It is found that for a given crystallographic direction the value of magnetostriction is weakly dependent on the magnetic field direction. In the uniform U phase at T⩾T sp, λ is negative and approximately equal in the b and c directions, while in the dimerized D phase at T〈T sp, λ is positive and λ b 〉λ c . At low temperatures, λ increases sharply at the magnetic-field-induced transition from the dimerized to the magnetic M phase. The experimental data allow estimation of the stress derivatives of the antiferromagnetic intrachain exchange interaction parameter and of the stress dependence of the critical field of the D-Mphase transition.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1134/1.567169
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Evidence for strong electron-phonon interaction in point contact spectroscopy of superconducting oriented La1−x Sr x CuO 4 (1994)
    Springer
    Journal of superconductivity 7 (1994), S. 371-374 
    Details
    ISSN: 1572-9605
    Keywords: Point contact spectroscopy ; LaSrCuO ; Andreev junction ; electron-phonon interaction
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract Point contact spectroscopy results obtained along the CuO planes an oriented LaSrCuO samples are presented. Both Andreev and tunneling contacts have been studied, up to 100 meV. The results are interpreted within the framework of a recent theory of inelastic transport through normal metal-superconductor interfaces, and both types of contacts are consistent with this theory. They point clearly to the electron-phonon interaction as the source of this inelastic scattering and of superconductivity in this cuprate.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00724571
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    Paper (German National Licenses)
    Fulltext
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