| 超导弱连接中的Josephson电流在一个磁通量子内的振荡(Ⅱ)——单结超导环 |
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| 引用本文： | 陈赓华,张裕恒.超导弱连接中的Josephson电流在一个磁通量子内的振荡(Ⅱ)——单结超导环[J].物理学报,1982,31(7):932-938. |
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| 作者姓名： | 陈赓华 张裕恒 |
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| 作者单位： | (1)中国科学技术大学物理系,合肥; (2)中国科学技术大学物理系,研究生 |
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| 摘 要： | 本文指出处在高Q值谐振腔中的单结超导环,当Josephson电流的n次倍频与外腔发生谐振时,由于在腔内形成的驻波电磁场对单结超导环自身的反馈作用,将导致在原来的以φ0为周期的超流电流锯齿波振荡上迭加一个周期为φ0/n,振幅为锯齿波振幅的2/nπ的正弦形小振荡。
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| 收稿时间： | 1981-08-27 |
THE SUPERCURRENT OSCILLATIONS WITHIN ONE FLUX QUANTUM PERIOD φ0 FOR WEAK LINKS (Ⅱ)——THE SUPERCONDUCTING RING CONTAINING A WEAK LINK |
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| CHENG GENG-HUA and ZHANG YU-HENG.THE SUPERCURRENT OSCILLATIONS WITHIN ONE FLUX QUANTUM PERIOD φ0 FOR WEAK LINKS (Ⅱ)——THE SUPERCONDUCTING RING CONTAINING A WEAK LINK[J].Acta Physica Sinica,1982,31(7):932-938. |
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| Authors: | CHENG GENG-HUA and ZHANG YU-HENG |
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| Abstract: | It is pointed out that if a superconducting ring containing a weak link is placed in a cavity, which is in resonant with the current flowing in the ring, i.e., when the frequency of the Josephson current or one of its n-th harmonies is equal to the cavity frequency, and if the cavity has sufficiently high Q-value, then the feedback of the stationary electric-magnetic wave will act on the ring itself and produce a small sinusoidal oscillation superposing on the primary sawtooth wave oscillating current. The period of the small oscillation will be φ0/n and its amplitude that of the sawtooth wave multiplied by 1/nπ. |
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