Magnetic field and sheet-current density of a thin type-II superconducting annulus
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Magnetic field and sheet-current density of a thin type-II superconducting annulus

机译：薄型II超导环空的磁场和板流密度

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Highlights?Presentation of an efficient method for calculating the magnetic field distribution.?Vertical component of the field drops at the above of washer.?Its radial component goes down to zero on thezaxes at the origin.?The effect of geometrical barrier on the field and current distribution is investigated.AbstractWe investigate theoretically the sheet-current density and total magnetic field (MF) distribution due to a thin, type-II superconducting annulus sample. We have supposed a washer (with the inner and outer radiiaandb) carrying sub-critical currents subject to an applied magnetic field. The sample is an ideal washer with no bulk pinning, under two different situations: (a) when flux is focused into the central hole and net current flowing around the washer is zero but the external fieldHa=Ba/μis on, and (b) in the presence of a potential barrier of geometrical origin. Our calculations show that the net MF is maximum in the near-edge region and in the between is weaker than other areas. Moreover, the effect of geometrical barrier on spatial distribution of the field for several superconducting washers of different radii has been analyzed. At the end, we have shown the behavior of field distribution as external field,Ha, is oriented at any arbitrary angleα.]]>
机译：<！[cdata [ 亮点 ？ 呈现用于计算磁场分布的有效方法的演示。 ？ 字段垂直组件掉落的垂直组件垫圈上面。 ？ 其径向组件在 z 轴上的速度下降到零。 ？ 几何屏障在字段中的效果a研究了ND电流分布。 抽象 理论上，我们通过薄的II型超导环空样品进行研究表介质密度和总磁场（MF）分布。我们已经假设了一种垫圈（内和外部半径 a 和 b ）承载受应用磁场的亚临界电流。样品是一个理想的洗衣机，没有散装钉扎，在两个不同的情况下：//www.w3.org/1998/math/mathml“altimg =”si13.gif“display =”内联“overflow =”滚动“> H A = b a / μ 在存在几何原产地的潜在屏障存在的情况下，（b）。我们的计算表明，近边缘区域的NET MF在近边缘最大，并且在其间比其他区域弱。此外，已经分析了几何屏障对不同半导体的几个超导垫圈的场的空间分布的影响。最后，我们已经显示了现场分布的行为作为外部字段， h a ，以任意角度 α 。 ]]>

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