Infrared reflectance spectra and optical conductivity of Tl2CaBa2Cu2O8 and Tl2Ca2Ba2Cu3O10 superconducting thin film samples

Autor:	Zeng-Fa Li, Guang-Yin Zhang, Shao-Lin Van, W.G. Zeng
Rok vydání:	1992
Předmět:	Superconductivity Materials science Phonon business.industry Infrared Photoconductivity General Engineering Analytical chemistry Infrared spectroscopy Sputter deposition Optical conductivity Condensed Matter::Materials Science Optics Thin film business
Zdroj:	Infrared Physics. 33:417-421
ISSN:	0020-0891
DOI:	10.1016/0020-0891(92)90041-q
Popis:	Films of the Tl2CaBa2Cu2O8 (Tl2122 phase) and Tl2Ca2Ba2Cu3O10 (Tl2223 phase) superconductors were prepared by d.c. magnetron sputtering method. Their C-axes were perpendicular to the surface. We measured their infrared (IR) reflectivity spectra and assignments of the phonon oscillators were made. The optical conductivity of Tl2122 and Tl2223 phases in the normal state have been obtained from measurements of the reflectivity over a wide frequency range. The position of the plasma peak is tentatively determined.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::a568cea4c6ca3b6e239a99ba86cb58f8 https://doi.org/10.1016/0020-0891(92)90041-q Zobrazit plný text záznamu