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
INFRARED REFLECTANCE FROM ORIENTED FILM SAMPLES OF Y-Ba-Cu-O
Department of Physics, Nankai University, Tianjin 300071
1 Department of Physics, Beijing University, Beijing 100871
2 Department of Electronic Science, Nankai University, Tianjin 300071
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.
ZENG Wensheng;LI Zengfa;ZHANG Guangyin;WANG Shouzheng;XIONG Guangcheng;YAN Saolin. INFRARED REFLECTANCE FROM ORIENTED FILM SAMPLES OF Y-Ba-Cu-O[J]. 中国物理快报, 1990, 7(4): 159-162.
ZENG Wensheng, LI Zengfa, ZHANG Guangyin, WANG Shouzheng, XIONG Guangcheng, YAN Saolin. INFRARED REFLECTANCE FROM ORIENTED FILM SAMPLES OF Y-Ba-Cu-O. Chin. Phys. Lett., 1990, 7(4): 159-162.
1990, Vol. 7 
