Studies of the Anomaly of Hall Coefficient in High T<suB>c</suB> Superconducting Thin Films

Chin. Phys. Lett.

1991, Vol. 8

Issue (6): 310-313 DOI:

Original Articles

Studies of the Anomaly of Hall Coefficient in High T_c Superconducting Thin Films

HE Zhenhui;SHA Jian;SU Zhenpeng;CHENG Xiang ai;WANG Shunxi;FANG Minghu¹;ZHANG Qirui¹;ZHOU Xianyi²;YAO Weiguo³;QI Zhenzhong³;YI Huairen⁴;LI Hongcheng⁴

Department of Physics, University of Science and Technology of China, Hefei 230026 ¹also Department of Physics, Zhejiang University, Hangzhou 310027 ²International Center for Materials Science, Academia Sinica, Shenyang 110015 and Department of Modern Physics, University of Science and Technology of China, Hefei 230026 ³Institute of Solid State Physics, Academia Sinica, Hefei 230031 ⁴Institute of Physics, Academia Sinica, Beijing 100080

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HE Zhenhui, SHA Jian, SU Zhenpeng et al 1991 Chin. Phys. Lett. 8 310-313

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Abstract Measurements of the Hall coefficient (R_H) were carried out for a polycrystalline YBa₂Cu₃O_7-y film, a well oriented YBa₂Cu₃O_7-y film and an oriented GdBa₂Cu₃O_7-y film. Sign change of RH was observed for the two YBa₂Cu₃O_7-y films near T_c, but not for the GdBa₂Cu₃O_7-y film which contains partly the component of (110) orientation. The R_H anisotropy model proposed previously turns out to be incorrect. Why the YBa₂Cu₃O_7-y films experience sign change of R_H while the GdBa₂Cu₃O_7-y film does not is tentatively investigated.

Keywords: 74.75.+t 73.50.Jt

Published: 01 June 1991

PACS:	74.75.+t
	73.50.Jt	(Galvanomagnetic and other magnetotransport effects)

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https://cpl.iphy.ac.cn/ OR https://cpl.iphy.ac.cn/Y1991/V8/I6/0310

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	HE Zhenhui
	SHA Jian
	SU Zhenpeng
	CHENG Xiang ai
	WANG Shunxi
	FANG Minghu
	ZHANG Qirui
	ZHOU Xianyi
	YAO Weiguo
	QI Zhenzhong
	YI Huairen
	LI Hongcheng

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