CeO2: An alternative insulator material for superconducting field effect devices
- 4 April 1994
- journal article
- conference paper
- Published by AIP Publishing in Applied Physics Letters
- Vol. 64 (14) , 1871-1873
- https://doi.org/10.1063/1.111783
Abstract
The properties of high‐Tc superconducting field‐effect devices using CeO2 as an insulating layer have been studied. The dielectric constant and hence the achieved charge transfer for constant gate voltage and equivalent geometry is smaller as compared to the established SrTiO3 dielectric. This is mostly compensated by better insulating properties. The observed field effects for a fixed amount of charge transfer are very similar to those obtained with the SrTiO3 dielectric, indicating that the observed field effects are truly due to changes in the charge carrier density and not due to field‐induced stresses in the multilayer structure.Keywords
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