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一、引言交流约瑟夫森效应的根据是:当两个弱耦合的超导体之间流动的直流超导电流的临界值被超过时,在弱耦合区域两端出现直流电压 V,而且有频率为υ的交流电流流过。这里
I. INTRODUCTION The basis for the exchange Josephson effect is that when the critical value of the DC superconducting current flowing between two weakly coupled superconductors is exceeded, a DC voltage V appears across the weakly coupled region and has a frequency of υ AC current flows. Here