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篇目详细内容 |
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【篇名】 |
Characteristics of the Surface-Intrinsic Josephson Junction |
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【刊名】 |
Frontiers of Physics in China |
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【刊名缩写】 |
Front. Phys. China |
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【ISSN】 |
1673-3487 |
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【EISSN】 |
1673-3606 |
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【DOI】 |
10.1007/s11467-005-0004-6 |
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【出版社】 |
Higher Education Press and Springer-Verlag |
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【出版年】 |
2006 |
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【卷期】 |
1
卷1期 |
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【页码】 |
122-124
页,共
3
页 |
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【作者】 |
YANG Li;
XU Wei-wei;
YE Su-li;
GUO Da-yuan;
YOU Li-xing;
WU Pei-heng;
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【关键词】 |
Josephson junction; intrinsic junction; surface junction; high-temperature superconductor |
【摘要】 |
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During the fabrication of intrinsic Josephson junctions (IJJs) with Bi2Sr2CaCu2O8+δ (BSCCO) single crystals, the superconductivity of the surface Cu–O layer is degraded because of a deposited metal film on top of the stack. Thus, the characteristics of the surface junction consisting of the surface Cu–O double layers remarkably differ from those of the junctions deep in the stack, which will be referred to as ordinary IJJs. The electrical transport characteristics of the surface junction, such as I–V, Ic′–T, and R–T, show that the critical temperature Tc′ of the surface junction is always lower than that of ordinary IJJs, and that the change of its critical current Ic′ with temperature is different from that of ordinary IIJs. Furthermore, by shunting the surface junction resistively, we are able to observe the AC Josephson effect at 3-mm waveband. |
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