A study on the microwave responses of YBCO and TBCCO thin films by coplanar resonator technique

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	A study on the microwave responses of YBCO and TBCCO thin films by coplanar resonator technique
	Shi, LB ; Wang, YF ; Ke, YY ; Zhang, GH ; Sheng, L ; Zhang, XQ ; Li, CG ; Hong, L ; Yu-Sheng, H
刊名	CHINESE PHYSICS
	2007
卷号	16 期号:10 页码:3036
ISSN号	1009-1963
中文摘要	YBa2Cu3O7(YBCO) thin films have been prepared by thermal coevaporation on LaAlO3(LAO) substrates, and Tl2Ba2CaCu2O8(TBCCO) thin films are synthesized by magnetron sputtering method on LAO substrates. The transition temperature T, is 90 K for YBCO/LAO and 104 K for TBCCO/LAO. Microwave responses of the films are studied systematically by coplanar resonator technique. Energy gaps of the films obtained are Delta(0) - 1.04k(B)T(c), for YBCO films and Delta(0) - 0.84k(B)T(c), for TBCCO films by analysing the temperature dependence of resonant frequencies of coplanar resonator. Penetration depth at 0 K lambda(0) - 198 nm for YBCO films and lambda(0) - 200 nm for TBCCO films could also be obtained by using the weak coupling theory and two fluid theory. Results of penetration depth and energy gap confirm the weak coupling properties of the films. In addition, microwave surface resistances R-s of YBCO/LAO and TBCCO/LAO are also investigated by analysing the quality factor and insert loss of the coplanar resonator. Surface resistance of TBCCO/LAO is less than that of YBCO/LAO, so that TBCCO/LAO films may have more potential applications.
收录类别	SCI
公开日期	2013-09-17
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/33296]
专题	物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文
推荐引用方式 GB/T 7714	Shi, LB,Wang, YF,Ke, YY,et al. A study on the microwave responses of YBCO and TBCCO thin films by coplanar resonator technique[J]. CHINESE PHYSICS,2007,16(10):3036.
APA	Shi, LB.,Wang, YF.,Ke, YY.,Zhang, GH.,Sheng, L.,...&Yu-Sheng, H.(2007).A study on the microwave responses of YBCO and TBCCO thin films by coplanar resonator technique.CHINESE PHYSICS,16(10),3036.
MLA	Shi, LB,et al."A study on the microwave responses of YBCO and TBCCO thin films by coplanar resonator technique".CHINESE PHYSICS 16.10(2007):3036.