Unexpected irreversible damage appeared in samples while investigating pulsed S-N switching in YBaCuO thin films. Examination of a scanning electron microscope image of a damaged film containing a defect revealed a step-like motion of the N-zone. Restoration of crack movement dynamics points to the formation of coherent jets. This would mean that cumulative convergence of unknown incompressible media took place. The known model of an edge barrier, when the S-N border, characterized by width λ eff , bounds a semi elliptical N-zone at the film edges, was applied for clarification of the cumulative convergence. In that model, counteracting forces cause a wave-like unstable form of the barrier S-N border, and further current growth increases the amplitude of wave-like distortions of the border. Then, current reconnection separates bulges from the N-zone and induces the appearance of the circular currents with a trapped magnetic flux. Heat release at the places with ...

中文翻译：

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高质量YBaCuO薄膜脉冲SN转换中的SN边界不稳定性，磁通量俘获和累积效应。

在调查YBaCuO薄膜中的脉冲SN开关时，样品中出现了意外的不可逆损伤。对包含缺陷的受损膜的扫描电子显微镜图像的检查显示出N区呈阶梯状运动。裂纹运动动力学的恢复表明相干射流的形成。这将意味着未知不可压缩介质的累积收敛。当以宽度λeff为特征的SN边界在胶片边缘处限制半椭圆N区域时，边缘屏障的已知模型被用于澄清累积会聚。在该模型中，反作用力导致势垒SN边界呈波状不稳定形式，并且进一步的电流增长会增大边界的波状畸变的幅度。然后，电流重新连接可将凸起从N区中分离出来，并以俘获的磁通量引起圆形电流的出现。发热的地方...