A-B效应的动力学机制及其实验验证方案  

The dynamical mechanism of A-B effect and its testing scheme

作　　者：王瑞峰[1] 

机构地区：[1]北京交通大学物理系,北京100044

出　　处：《物理学报》2005年第10期4532-4537,共6页Acta Physica Sinica

基　　金：北京交通大学人才基金(批准号:LIJ03001)资助的课题.~~

摘　　要：主要讨论了A-B效应所产生的动力学机制,指出运动电子所产生的磁场和外磁场的相互叠加是产生A-B效应的动力学原因。如果能够屏蔽掉运动电子所产生的磁场使之不能和外磁场相互叠加,那么A-B效应也将随之消失。为了验证这一结论,提出了一种新的实验方案,该方案可以对A-B效应的动力学机制做出明确的判断。The dynamical mechanism of A- B effect is discussed in detail. It is found that A - B effect is due to the superposition of the magnetic field produced by the moving charges with that in the solenoid, rathor than the existence of vector potential A. If such a magnetic field superposition can be prevented, the A-B effect will disappear, even though the vector potential A still exists in space. To verify this conclusion, a new experimental scheme is suggested.

关 键 词：A-B效应 超导电性 迈斯纳效应 介观物理 动力学机制 验证方案 实验方案 运动电子 外磁场 叠加 

分 类 号：O413.1[理学—理论物理] P542[理学—物理]