Design and fabrication of coplanar YBCO structures on lithium niobate substrates

Tipo de documentoArtículo
Fecha de publicación1999-06-30
EditorIEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Condiciones de accesoAcceso abierto
Todos los derechos reservados. Esta obra
está protegida por los derechos de propiedad intelectual e industrial. Sin perjuicio de las exenciones legales
existentes, queda prohibida su reproducción, distribución, comunicación pública o transformación sin la
autorización del titular de los derechos
Resumen
YBa2Cu3O7-δ (YBCO) with low RF losses has been successfully deposited onto lithium niobate (LNO) to improve the performance of electrooptic Mach-Zender modulators. Epitaxial, c-axis oriented superconducting YBCO thin films have been grown on X-cut LNO single crystals with a yttria-stabilized zirconia (YSZ) buffer layer by RF magnetron sputtering. This buffer layer is needed to obtain good superconducting properties of the YBCO grown. Numerical tools have been developed to analyze CPW structures based on YBCO/YSZ/LNO trilayers, and they indicate that YSZ thickness has to be kept to the minimum necessary for good YBCO growth. With this restriction, the RF losses of YBCO/YSZ/LNO samples have been measured. The results from these measurements are used to quantify the performance enhancement in a Mach-Zender modulator using YBCO electrodes.
CitaciónRozan, E; Collado, C; O'Callaghan, J.M.; Pous, R; Fabrega, L; Rius, J; Rubí, R; Fontcuberta, J; Harackiewicz, F. Design and fabrication of coplanar YBCO structures on lithium niobate substrates. IEEE Transactions on applied superconductivity, 1999, vol. 9, núm. 2, p.2866-2869
ISSN1051-8223
Ficheros | Descripción | Tamaño | Formato | Ver |
---|---|---|---|---|
design and fabrication 00783627.pdf | 399,4Kb | Ver/Abrir |