矢势A场中二维超导感应电流的干涉  

Interference of two-dimensional superconducting induced current in vector potential A field

作　　者：李元杰[1] 贾文川[2] 

机构地区：[1]华中科技大学物理学院,武汉430074 [2]上海大学机械学院,上海200072

出　　处：《大学物理》2017年第6期6-8,共3页College Physics

摘　　要：在二维超导金属面上,用被超导屏蔽的距离为d的两无限长直磁通垂直穿过,开始dφ/dt≠0,并在二维超导金属面上感应两个反向等值电流,然后使dφ/dt=0且两磁通皆维持φ0不变.本文计算并模拟了二维超导金属面上感应电流的干涉分布流线.我们称这一效应为L-J效应,它是A场中的超导感应电流干涉效应.When a two-dimensional superconducting mental surface is passed through by two infinite straight magnetic flux,it is shielded by superconductivity.It is supposed that the change rate of flux is not equal to zero at the beginning,which induces two opposite and equal currents on the two-dimensional superconducting mental surface.In this situation,when the change rate of flux is changed to zero and both magnetic fluxes remain constant,a new physical interference effect appears. In this paper, the interference streamline distribution on the two-dimensional superconducting mental surface is calculated and simulated. We named the new interference phenomenon L-J effect considered as a two-dimensional A-B effect.

关 键 词：超导感应电流 角动量最小耦合原理 电流的量子相位干涉 

分 类 号：O441[理学—电磁学]