We study the effect of the substrate on the effective surface impedance of a YBa2Cu3O7-delta thin film grown over a silicon substrate. The microwave measurements, performed with a resonant cavity technique at two distinct frequencies (24 and 48 GHz), show anomalies both in the temperature and in the frequency dependences. By properly taking into account a relevant complex substrate contribution, with an important role played by the finite thickness effect, the whole set of data finds a satisfactory explanation in terms of standard impedance transformations. Using independent measurements at a single temperature, it is possible to extract the temperature dependence of the YBa2Cu3O7-delta bulk surface impedance, which shows the expected frequency and temperature behaviours.
Pompeo N, Marcon R, Mechin L, & Silva E (2005). Effective surface impedance of YBa2CU3O7-delta films on silicon substrates RID B-6088-2008. SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 18(4), 531-537 [10.1088/0953-2048/18/4/025].
Titolo: | Effective surface impedance of YBa2CU3O7-delta films on silicon substrates RID B-6088-2008 | |
Autori: | ||
Data di pubblicazione: | 2005 | |
Rivista: | ||
Citazione: | Pompeo N, Marcon R, Mechin L, & Silva E (2005). Effective surface impedance of YBa2CU3O7-delta films on silicon substrates RID B-6088-2008. SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 18(4), 531-537 [10.1088/0953-2048/18/4/025]. | |
Abstract: | We study the effect of the substrate on the effective surface impedance of a YBa2Cu3O7-delta thin film grown over a silicon substrate. The microwave measurements, performed with a resonant cavity technique at two distinct frequencies (24 and 48 GHz), show anomalies both in the temperature and in the frequency dependences. By properly taking into account a relevant complex substrate contribution, with an important role played by the finite thickness effect, the whole set of data finds a satisfactory explanation in terms of standard impedance transformations. Using independent measurements at a single temperature, it is possible to extract the temperature dependence of the YBa2Cu3O7-delta bulk surface impedance, which shows the expected frequency and temperature behaviours. | |
Handle: | http://hdl.handle.net/11590/135207 | |
Appare nelle tipologie: | 1.1 Articolo in rivista |