Directional pinning and anisotropy in YBa

N. Pompeo, K. Torokhtii, A. Augieri, G. Celentano, V. Galluzzi, E. Silva

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Abstract

We present a study of the anisotropic vortex parameters as obtained from measurements of the microwave complex resistivity in the vortex state with a tilted applied magnetic field in YBa2Cu3O7-xthin films with BaZrO3nanorods. We present the angular dependence of the vortex viscosity η, the pinning constantkpand the upper limit for the creep factorχM. We show that the directional effect of the nanorods is absent in η, which is dictated by the mass anisotropy γ. By contrast, pinning-mediated properties are strongly affected by the nanorods. It is significant that the pinning and creep affected by the nanorods is detectable also at our very high operating frequency, which implies very short-range displacements of the vortices from their equilibrium position. © 2014 Elsevier B.V. All rights reserved.
Original languageEnglish
Pages (from-to)146 - 149
Number of pages4
JournalPhysica C: Superconductivity and its Applications
Volume503
DOIs
Publication statusPublished - 15 Aug 2014
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

Cite this

Pompeo, N., Torokhtii, K., Augieri, A., Celentano, G., Galluzzi, V., & Silva, E. (2014). Directional pinning and anisotropy in YBa. Physica C: Superconductivity and its Applications, 503, 146 - 149. https://doi.org/10.1016/j.physc.2014.02.026