Preparation of regular arrays of antidots in YBa2Cu3O7 thin films and observation of vortex lattice matching effects

被引：152

作者：

Castellanos, A ^{[1
]}

Wordenweber, R ^{[1
]}

Ockenfuss, G ^{[1
]}

VonderHart, A ^{[1
]}

Keck, K ^{[1
]}

机构：

[1] UNIV WURZBURG, INST PHYS, D-97074 WURZBURG, GERMANY

来源：

APPLIED PHYSICS LETTERS | 1997年 / 71卷 / 07期

关键词：

D O I：

10.1063/1.119701

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Optimized sputtered YBa2Cu3O7 (YBCO) thin films on CeO2-buffered sapphire substrates are patterned into square lattices of submicrometer holes (antidots) with diameters of 250-450 nm and lattice parameters of d = 500-1000 nm without deterioration of superconducting properties. In the mixed state, matching effects between the Abrikosov vortex lattice and the artificial antidot lattice are observed. These effects are in the form of peaks or cusps in the critical current density recorded as a function of magnetic induction at integers rr and specific rationals kll of the matching field B-m=(Phi(0)/d(2)). The experimental results are discussed in the context of existing theories. The existence of multiquanta vortices confined by the holes in YBCO films are considered. (C) 1997 American Institute of Physics.

引用

页码：962 / 964

页数：3

共 19 条

[1] COMPOSITE FLUX-LINE LATTICES STABILIZED IN SUPERCONDUCTING FILMS BY A REGULAR ARRAY OF ARTIFICIAL DEFECTS [J].