Anisotropy and directional pinning in YBa2Cu3O7-x with BaZrO3 nanorods

被引：27

作者：

Pompeo, N. ^{[1
,2
]}

Augieri, A. ^{[3
]}

Torokhtii, K. ^{[1
,2
]}

Galluzzi, V. ^{[3
]}

Celentano, G. ^{[3
]}

Silva, E. ^{[1
,2
]}

机构：

[1] Univ Roma Tre, Dipartimento Ingn, I-00146 Rome, Italy

[2] Univ Roma Tre, CNISM, I-00146 Rome, Italy

[3] ENEA Frascati, I-00044 Frascati, Roma, Italy

来源：

APPLIED PHYSICS LETTERS | 2013年 / 103卷 / 02期

关键词：

SURFACE IMPEDANCE; FILMS; SUPERCONDUCTORS; SUBSTRATE;

D O I：

10.1063/1.4813405

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Measurements of anisotropic transport properties (dc and high-frequency regime) of driven vortex matter in YBa2Cu3O7-x with elongated strong-pinning sites (c-axis aligned, self-assembled BaZrO3 nanorods) are used to demonstrate that the effective-mass angular scaling takes place only in intrinsic physical quantities (flux-flow resistivity), and not in pinning-related Labusch parameter and critical currents. Comparison of the dynamics at different time scales shows evidence for a transition of the vortex matter toward a Mott phase, driven by the presence of nanorods. The strong pinning in dc arises partially from a dynamic effect. (C) 2013 Author(s).

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页数：4

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