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首页> 外文期刊>Physical review >Flux-quantum-discretized dynamics of magnetic flux entry, exit, and annihilation in current-driven mesoscopic type-Ⅰ superconductors
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Flux-quantum-discretized dynamics of magnetic flux entry, exit, and annihilation in current-driven mesoscopic type-Ⅰ superconductors

机译：电流驱动介观Ⅰ型超导体中磁通量的量子通量离散动力学

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摘要

We study nonlinear flux dynamics in a current-carrying type-I superconductor. The stray magnetic field of the current induces the intermediate state, where nucleation of flux domains is discretized to a single fluxoid at a time, while their final shape (tubular or laminar), size, and nucleation rate depend on applied current and edge conditions. The current induces opposite flux domains on opposite sides of the sample, and subsequently drives them to annihilation—which is also discretized, as a sequence of vortex-antivortex pairs. The discretization of both nucleation and annihilation leaves measurable traces in the voltage across the sample and in locally probed magnetization. The reported dynamic phenomena thus provide an unambiguous proof of a flux quantum being the smallest building block of the intermediate state in type-I superconductors.
机译：我们研究载流I型超导体中的非线性磁通动力学。电流的杂散磁场感应出一种中间状态，在此状态下，磁通域的形核一次离散化为单个磁通量，而它们的最终形状（管状或层状），尺寸和成核速率取决于所施加的电流和边缘条件。电流在样品的相反两侧感应出相反的磁通域，随后驱使它们to灭（也被离散化为一系列涡旋-反涡旋对）。成核和an灭的离散化会在样品两端的电压和局部探测的磁化强度中留下可测量的痕迹。因此，所报道的动力学现象清楚地证明了通量量子是I型超导体中中间态的最小构件。

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  • 来源
    《Physical review》 |2012年第9期|p.092502.1-092502.4|共4页
  • 作者

    G. R. Berdiyorov; A. D. Hernandez-Nieves; M. V. Milosevic; F. M. Peeters; D. Dominguez;

  • 作者单位

    Departement Fysica, Universiteit Antwerpen, Groenenborgerlaan 171, B-2020 Antwerpen, Belgium;

    Departement Fysica, Universiteit Antwerpen, Groenenborgerlaan 171, B-2020 Antwerpen, Belgium,Centro Atomico Bariloche, 8400 San Carlos de Bariloche, Rio Negro, Argentina;

    Departement Fysica, Universiteit Antwerpen, Groenenborgerlaan 171, B-2020 Antwerpen, Belgium;

    Departement Fysica, Universiteit Antwerpen, Groenenborgerlaan 171, B-2020 Antwerpen, Belgium;

    Centro Atomico Bariloche, 8400 San Carlos de Bariloche, Rio Negro, Argentina;

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  • 正文语种 eng
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  • 关键词

    mesoscopic and nanoscale systems; electronic transport in mesoscopic systems;

    机译：介观和纳米系统;介观系统中的电子传输;

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