涨落对约瑟夫逊效应中伏安特性的影响

Effects of Fluctuations on Current-voltage Characteristic Curve of Josephson Effect

在零电容条件下,研究了内外噪声对约瑟夫逊结中直流伏安特性曲线的影响。发现当内外噪声同时存在时,由于外涨落的影响,使平均归一化电压,〈V〉减小;当归一化电流α减少到一定程度,外涨落对伏安特性曲线的影响可以忽略。

In the case of small capacitance, effects of internal and external noises on dc current-voltage characteristic of the Josephson junction are studied. We obtain that the average normalization voltage of the Josephson junction decreases because of the presence of the external noise, but the effects of the external noise on current-voltage characteristics of the Josephson junction are neglected when the normalization current decreases to the certain value.