Coupling of a Tl 2 Ba 2 CaCu 2 O 8 Thin Film Intrinsic Josephson Junction and a Fabry–Perot Resonator
Coupling of a Tl 2 Ba 2 CaCu 2 O 8 Thin Film Intrinsic Josephson Junction and a Fabry–Perot Resonator
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DOI：
10.1088/0256-307x/28/3/037401
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发表时间：
2011-02
影响因子：
3.5
通讯作者：
B. Fan;Z. Wang;H. Yue;S. Yan;L. Ji;M. He;F. Song;L. Fang;Xinjie Zhao
中科院分区：
文献类型：
--
作者：
B. Fan;Z. Wang;H. Yue;S. Yan;L. Ji;M. He;F. Song;L. Fang;Xinjie Zhao
研究了Tl_2Ba_2CaCu_2O_8（Tl-2212）薄膜本征约瑟夫森结与半球形法布里-珀罗谐振腔的电磁耦合机制。提出了一种有效的耦合机理分析模型。介质基板用作介质谐振器天线和约瑟夫森结，超导膜用作馈电线以在介质谐振器天线内部激发谐振模式。为了验证这种方法，制作了两个不同衬底尺寸和超导膜形状的约瑟夫森结样品，并在微波辐照下进行了测试。同时，通过数值模拟对这些样品的天线特性和场分布进行了数值模拟。两个样品与法布里-珀罗谐振腔的不同耦合强度与数值模拟结果吻合较好。该模型对微波约瑟夫森结的研究具有重要意义。
We study the electromagnetic coupling mechanism of a Tl2Ba2CaCu2O8 (Tl-2212) thin film intrinsic Josephson junction to a hemispherical Fabry—Perot resonator. An effective model to analyze coupling mechanism is put forward. The dielectric substrate is used as a dielectric resonator antenna and the Josephson junction, and a superconducting film is used as the feed line to excite a resonance mode inside the dielectric resonator antenna. To confirm this method, two Josephson junction samples with different dimensions of substrate and shapes of superconducting film are fabricated and tested under microwave irradiations. At the same time, numerical simulations of the antenna characteristics and the field distribution of these samples are performed by numerical simulation. The different coupling intensities of the two samples with the Fabry—Perot resonator fit well with the numerical simulation results. The proposed model is important for Josephson junctions used in the microwave field.