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Scattering processes of normal and fluctuating carriers in REBa2Cu3O7-δ (RE=Y, Ho) single crystals with unidirectional twin boundaries

Ruslan V. Vovk 1Mykhaylo A. Obolenskii 1Alexander V. Bondarenko 1Ioannis L. Goulatis 1Alexander Chroneos 2,3

1. Kharkov National University, 4 Svoboda Sq., Kharkov 61077, Ukraine
2. Imperial College London, Department of Materials, London, United Kingdom
3. IMEL, NCSR Demokritos, Aghia Paraskevi, Athens 15310, Greece


The effect of twin boundaries on the normal and fluctuation conductivity of REBa2Cu3O7-δ (RE=Y, Ho) single crystals has been investigated. The temperature dependence of the excess conductivity can be satisfactory described by the Lawrence-Doniach theoretical model. The twin boundaries are efficient scattering centers of normal and fluctuation carriers. The predicted values of the coherence length perpendicular to the ab-plane ξc(0) are in good agreement with the values determined from the magnetic measurements of stoichiometric YBaCuO crystals.


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Presentation: Poster at E-MRS Fall Meeting 2006, Symposium K, by Alexander Chroneos
See On-line Journal of E-MRS Fall Meeting 2006

Submitted: 2006-04-27 08:07
Revised:   2009-06-07 00:44