Direct observation of surface plasmons in YBCO by attenuated total reflection of light in the infrared

✍ Scribed by D.G. Walmsley; C.C. Smyth; A. Sellai; P.G. McCafferty; P. Dawson; T. Morrow; W.G. Graham

• Publisher: Elsevier Science
• Year: 1994
• Tongue: English
• Weight: 152 KB
• Volume: 194-196
• Category: Article
• ISSN: 0921-4526
• DOI: 10.1016/0921-4526(94)91666-7

✦ Synopsis

Surface plasmons have been observed directly in YBCO films in an Otto-geometry attenuated total reflection measurement at a wavelength of 3.392 p.m. The laser deposited films are c-axis oriented on an MgO substrate. This observation confirms theoretical deductions from complex dielectric function data. Measured data have been fitted to a theoretical model and are compared with the optical constants determined by Bozovic [1]. The investigations have been extended to films with other orientations to investigate whether material anisotropy is reflected in the results and non-metallic behaviour is found.