Angular dependence of the high-frequency vortex response in YBa$_2$Cu$_3$O$_{7-x}$ thin film with self-assembled BaZrO$_3$ nanorods

N. Pompeo; R. Rogai; K. Torokhtii; A. Augieri; G. Celentano; V. Galluzzi; E. Silva

doi:10.1016/j.physc.2011.12.008

paper

Angular dependence of the high-frequency vortex response in YBa $_{2}$ Cu $_{3}$ O $_{7 - x}$ thin film with self-assembled BaZrO $_{3}$ nanorods

arXiv:1112.5067 · doi:10.1016/j.physc.2011.12.008

Abstract

We present a microwave study of the angular dependence of the flux-flow resistivity $ρ_{f f}$ and of the pinning constant $k_{p}$ in YBCO thin films containing BZO nanorods. We find that BZO nanorods are very efficient pinning centers, even in tilted fields. We find that $ρ_{f f}$ is a scaling function of a reduced field $H / f (θ)$ . We extend a model for the anisotropic motion of vortices in uniaxially anisotropic superconductor, able to describe the experimental $f (θ)$ on the basis of only the intrinsic anisotropy of YBCO. The pinning constant $k_{p}$ , by contrast, exhibits different field dependences in different angular ranges, consistent with pinning by BZO at angles as large as 60 $^{\circ}$ , and with pinning along the $a, b$ planes as originating from the same mechanism as in pure YBCO with the field along the c axis.

5 pages, 3 figures

Angular dependence of the high-frequency vortex response in YBa $_{2}$ Cu $_{3}$ O $_{7 - x}$ thin film with self-assembled BaZrO $_{3}$ nanorods

Abstract

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Angular dependence of the high-frequency vortex response in YBa2​Cu3​O7−x​ thin film with self-assembled BaZrO3​ nanorods

Abstract

References in corpus (4)

Cited by in corpus (3)

Angular dependence of the high-frequency vortex response in YBa $_{2}$ Cu $_{3}$ O $_{7 - x}$ thin film with self-assembled BaZrO $_{3}$ nanorods