| 环形Josephson结中圆对称孤子解的微扰分析 |
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| 引用本文： | 王强华,王炜,姚希贤.环形Josephson结中圆对称孤子解的微扰分析[J].物理学报,1991,40(12):1999-2005. |
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| 作者姓名： | 王强华 王炜 姚希贤 |
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| 作者单位： | 南京大学物理系非线性动力学中心,南京,210008 |
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| 摘 要： | 本文用微扰方法,研究环形Josephson结中有扰动情形下sine-Gordon方程的圆对称孤子解,得到孤子的动力学方程的解析形式。所得的I—V曲线(第一零场台阶)与数值计算结果符合得很好。
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| 关 键 词： | Josephson结 孤子解 微扰分析 |
| 收稿时间： | 1991-01-14 |
CIRCULARLY SYMMETRIC SOLITON SOLUTION IN AN ANNULAR JOSEPHSON JUNCTION |
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| WANG QIANG-HUA,WANG WEI and YAO XI-XIAN.CIRCULARLY SYMMETRIC SOLITON SOLUTION IN AN ANNULAR JOSEPHSON JUNCTION[J].Acta Physica Sinica,1991,40(12):1999-2005. |
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| Authors: | WANG QIANG-HUA WANG WEI and YAO XI-XIAN |
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| Abstract: | We have analysed the circularly symmetric sine-Gordon equation with bias and dissipation by means of a simplified perturbation theory. Analytic solutions that describe the dynamical behaviour of a quasisoliton trapped within the annular junction have been obtained. Between the results of our theory and numerical simulation, there exists a good agreement for the first zero field step (ZFS) in the l-V characteristic. A brief discussion of our results is also presented. |
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