| Microwave Response of Bi2Sr2CaCu2O8+δ Surface Intrinsic Josephson Junctions with Bending Pancake Vortices |
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| 引用本文： | 魏彦锋,赵士平,朱晓波,陈赓华,任育峰,于洪伟,杨乾声.Microwave Response of Bi2Sr2CaCu2O8+δ Surface Intrinsic Josephson Junctions with Bending Pancake Vortices[J].中国物理快报,2007,24(6):1709-1712. |
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| 作者姓名： | 魏彦锋 赵士平 朱晓波 陈赓华 任育峰 于洪伟 杨乾声 |
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| 作者单位： | Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100080 |
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| 基金项目： | Supported by the National Natural Science Foundation of China under Grant Nos 10474129 and 10534060, and the National Key Basic Research Programme of China under Grant Nos 2006CB601007 and 2006CB921107. |
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| 摘 要： | We study the microwave response of surface intrinsic Josephson junctions on Bi2Sr2 CaCu2O8＋δ, in which bending pancake vortex lines are introduced in a controllable way. It is found that the bending vortices can greatly influence the response. In some cases, typical Shapiro steps that lie far above the quasiparticle branch are observed, with the step interval satisfying the Josephson relation and their amplitude versus the square root of microwave power following the Bessel function behaviour. In the other cases, current steps that lie on the quasiparticle branch are observed, but only one or two steps appear at the same time under the variation of the microwave power.
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| 关 键 词： | 微波 约瑟夫森效应 表面结构 涡旋 |
| 收稿时间： | 2007-3-6 |
| 修稿时间： | 2007-03-06 |
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