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Anisotropic scaling in YBa2Cu3O7 crystals with columnar defects

Alejandro V. Silhanek·Leonardo Civale
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Abstract

We explore the interplay between the mass anisotropy and the uniaxial pinning of tilted columnar defects (CD) in a YBa2Cu3O7 single crystal. At high temperatures T and fields H a sharp peak in the irreversible magnetization Mi at the direction of the tracks signals the presence of the CD. At low T such a peak is not observed, and the influence of the CD appears only as a perturbation to the angular dependence due to the anisotropy. We show that at low T and high H the uniaxial effects due to CD can be recovered by performing an anisotropic rescaling. As expected, this scaling fails at low H.

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Alejandro V. Silhanek, Leonardo Civale. 2003-12-16. Anisotropic scaling in YBa2Cu3O7 crystals with columnar defects. https://doi.org/10.1023/b%3Ajolt.0000016979.93781.c2

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