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Altering magnetic response of superconductors by rotation
Physics Letters A ( IF 2.6 ) Pub Date : 2020-12-01 , DOI: 10.1016/j.physleta.2020.126939
Jun-Ping Wang

Abstract It is generally believed that, at a certain temperature below the critical one, magnetic response of a superconductor (SC) is determined solely by its intrinsic properties. Here we show that the mechanical rotation of a SC can easily change the values of the critical fields at which the superconductivity is destroyed (type-1 SC) or the vortices penetrate into (exit from) the material (type-2 SC). This is due to a superposition of the Meissner current induced by the external field, and the spontaneous current on the surface of the SC induced by the mechanical rotation. As a result, the critical fields of a SC can be increased or decreased, depending on the geometrical form of the material and the relative orientation of rotation and the external field.

中文翻译:

通过旋转改变超导体的磁响应

摘要 一般认为,在低于临界温度的某一温度下,超导体 (SC) 的磁响应完全由其固有特性决定。在这里,我们表明 SC 的机械旋转可以很容易地改变超导性被破坏(类型 1 SC)或涡流穿透(退出)材料(类型 2 SC)的临界场值。这是由于外场感应的迈斯纳电流与机械旋转感应的 SC 表面自发电流的叠加。因此,SC 的临界场可以增加或减少,这取决于材料的几何形状以及旋转和外部场的相对方向。
更新日期:2020-12-01
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