首页> 美国卫生研究院文献>Scientific Reports >Long-range vortex transfer in superconducting nanowires
【2h】

Long-range vortex transfer in superconducting nanowires

机译:超导纳米线中的远距离涡旋转移

代理获取
本网站仅为用户提供外文OA文献查询和代理获取服务,本网站没有原文。下单后我们将采用程序或人工为您竭诚获取高质量的原文,但由于OA文献来源多样且变更频繁,仍可能出现获取不到、文献不完整或与标题不符等情况,如果获取不到我们将提供退款服务。请知悉。

摘要

Under high-enough values of perpendicularly-applied magnetic field and current, a type-II superconductor presents a finite resistance caused by the vortex motion driven by the Lorentz force. To recover the dissipation-free conduction state, strategies for minimizing vortex motion have been intensely studied in the last decades. However, the non-local vortex motion, arising in areas depleted of current, has been scarcely investigated despite its potential application for logic devices. Here, we propose a route to transfer vortices carried by non-local motion through long distances (up to 10 micrometers) in 50 nm-wide superconducting WC nanowires grown by Ga+ Focused Ion Beam Induced Deposition. A giant non-local electrical resistance of 36 Ω has been measured at 2 K in 3 μm-long nanowires, which is 40 times higher than signals reported for wider wires of other superconductors. This giant effect is accounted for by the existence of a strong edge confinement potential that hampers transversal vortex displacements, allowing the long-range coherent displacement of a single vortex row along the superconducting channel. Experimental results are in good agreement with numerical simulations of vortex dynamics based on the time-dependent Ginzburg-Landau equations. Our results pave the way for future developments on information technologies built upon single vortex manipulation in nano-superconductors.
机译:在垂直施加的磁场和电流的足够高的值下,II型超导体表现出由洛伦兹力驱动的涡旋运动引起的有限电阻。为了恢复无耗散的传导状态,在最近的几十年中,已经对减少涡旋运动的策略进行了深入研究。然而,尽管它在逻辑器件中有潜在的应用,但很少研究在电流不足的区域产生的非局部涡旋运动。在这里,我们提出了一种通过非局部运动携带的涡流通过Ga + 聚焦离子束诱导沉积生长的50μnm宽超导WC纳米线中的长距离(最多10微米)的传递路径。在3μm长的纳米线中,在2kK处测得的巨大非局部电阻为36μΩ,比其他超导体的较宽线的信号高40倍。这种巨大的影响是由于存在强大的边缘约束潜力,阻碍了横向涡流位移,从而允许单个涡流行沿超导通道进行长距离相干位移。实验结果与基于时间相关的Ginzburg-Landau方程的涡旋动力学数值模拟吻合良好。我们的结果为基于纳米超导体中单涡旋操纵的信息技术的未来发展铺平了道路。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
代理获取

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号