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首页> 外文期刊>Physica, C. Superconductivity and its applications >Guided vortex motion in high-T-c superconducting thin films and devices with special arrangements of artificial defects
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Guided vortex motion in high-T-c superconducting thin films and devices with special arrangements of artificial defects

机译：高T-c超导薄膜和具有特殊人工缺陷排列的器件中的引导涡旋运动

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摘要

Controlled trapping and guided motion of vortices via special arrangements of antidots in YBa2Cu3O7 films and devices is demonstrated. Resistive Hall-type measurements prove the presence of guided flux motion along rows of antidots. In contrast to conventional vortex motion due to vortex unpinning at currents exceeding the critical current, this motion is present down to zero current and low temperatures. It is characterized by a linear voltage-current dependence, i.e., ohmic behavior. The latter is indicative for a novel mechanism of vortex propagation that is probably based upon flux nucleation within antidots due to the redistribution of screening currents and flux quantization. Together with trapping of vortices by isolated antidots this mechanism can be used for new devices concepts. As an example a vortex ratchet formed by a special arrangement of antidots is demonstrated. (C) 2004 Elsevier B.V. All rights reserved.
机译：通过YBa2Cu3O7薄膜和器件中的解毒剂的特殊排列，证明了涡流的受控俘获和引导运动。电阻霍尔型测量证明了沿解毒剂行引导的磁通运动的存在。与由于在超过临界电流的电流下涡旋解除而导致的常规涡旋运动相反，该运动在低至零电流和低温下都存在。其特征在于线性电压-电流依赖性，即欧姆行为。后者指示了涡旋传播的新机制，该机制可能是由于屏蔽电流的重新分布和通量量化而导致的解毒剂内的通量成核。与孤立的解毒剂捕获涡流一起，该机制可用于新的设备概念。作为示例，展示了由解毒剂的特殊布置形成的涡旋棘轮。 （C）2004 Elsevier B.V.保留所有权利。

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