| Autor: |
Björnängen, Therese, Axnäs, Johan, Eltsev, Yuri, Rapp, Östen |
| Zdroj: |
Journal of Low Temperature Physics; Dec1999, Vol. 117 Issue 5/6, p1247-1251, 5p |
| Abstrakt: |
The magnetoresistance of six untwinned YBa2 Cu3 O7−δ crystals has been measured above Tc for I⊥ B| c. Fluctuation theories allowing for an in-plane coherence length anisotropy (ξa ≠ ξb ) were used in the analyses. The results suggest that the anisotropy, γ = ξb /ξa , is considerably lower than that expected from the resistivity ratio, i.e., $$\gamma < \sqrt {\rho _a /\rho _b } $$ . Some magnetoresistive measurements with the field in the ab-plane are also presented. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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