INFRARED REFLECTANCE FROM ORIENTED FILM SAMPLES OF Y-Ba-Cu-O

Chin. Phys. Lett.

1990, Vol. 7

Issue (4): 159-162 DOI:

Original Articles

INFRARED REFLECTANCE FROM ORIENTED FILM SAMPLES OF Y-Ba-Cu-O

ZENG Wensheng;LI Zengfa;ZHANG Guangyin;WANG Shouzheng¹;XIONG Guangcheng¹ ;YAN Saolin²

Department of Physics, Nankai University, Tianjin 300071 ¹ Department of Physics, Beijing University, Beijing 100871 ² Department of Electronic Science, Nankai University, Tianjin 300071

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ZENG Wensheng, LI Zengfa, ZHANG Guangyin et al 1990 Chin. Phys. Lett. 7 159-162

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Abstract We have studied infrared reflectivity from epitaxial films of YBaCuO, in which the c axes are oriented either perpendicular or parallel to the film surface. We classified phonons in superconducting phase to be two modes including E⊥C and E//C modes. The strong coupling between the phonons and free carriers reduces the infrared activity of phonons. The infrared activity of phonons increases in the process that the orthorhombic phase changed into tetragonal phase. The important role of phonon in superconductivity is shown.

Keywords: 74.75.+t 63.20.-e

Published: 01 April 1990

PACS:	74.75.+t
	63.20.-e	(Phonons in crystal lattices)

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https://cpl.iphy.ac.cn/ OR https://cpl.iphy.ac.cn/Y1990/V7/I4/0159

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	ZENG Wensheng
	LI Zengfa
	ZHANG Guangyin
	WANG Shouzheng
	XIONG Guangcheng
	YAN Saolin

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