Effect of dc electric field on the effective microwave surface impedance of YBa2Cu3O7/SrTiO3/YBa2Cu3O7 trilayers
- 6 December 1993
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 63 (23), 3215-3217
- https://doi.org/10.1063/1.110202
Abstract
We have studied the effect of a dc electric field on the effective microwave surface impedance of a thin film YBa2Cu3O7/SrTiO3/YBa2Cu3O7 (YBCO/STO/YBCO) trilayer by a dielectric resonator technique. At large dc electric fields (≳105 V/cm), both the effective surface resistance and reactance of the sample decrease monotonically with increasing dc voltage applied to the to YBCO film, yielding at 25 K and 24.7 GHz ‖δRs/δVdc‖∼0.25 μΩ/V and ‖δXs/δVdc‖∼1.8 μΩ/V, respectively. A two‐fluid analysis indicates that the changes in the surface impedance can be explained in terms of field induced changes in the superconducting carrier density of the top YBCO film.Keywords
This publication has 8 references indexed in Scilit:
- Electric field effect control of a superconducting YBa2Cu3O7 inductorApplied Physics Letters, 1993
- Multichip module using multilayer YBa2Cu3O7−δ interconnectsApplied Physics Letters, 1993
- Dielectric properties of SrTiO3 thin films used in high T c superconducting field-effect devicesApplied Physics Letters, 1992
- Effects of field-induced hole-density modulation on normal-state and superconducting transport inPhysical Review Letters, 1992
- Electric field effect in high T c superconducting ultrathin YBa2Cu3O7−x filmsApplied Physics Letters, 1991
- Electric field effect on superconducting YBa2Cu3O7?? filmsZeitschrift für Physik B Condensed Matter, 1991
- Permittivity of Strontium TitanateJournal of Applied Physics, 1972
- The surface impedance of superconductorsAdvances in Physics, 1964