Effect of dc electric field on the effective microwave surface impedance of YBa2Cu3O7/SrTiO3/YBa 2Cu3O7 trilayers

A. T. Findikoglu, C. Doughty, S. M. Anlage, Qi Li, X. X. Xi, T. Venkatesan

Research output: Contribution to journalArticle

42 Citations (Scopus)

Abstract

We have studied the effect of a dc electric field on the effective microwave surface impedance of a thin film YBa2Cu3O 7/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.

Original languageEnglish (US)
Pages (from-to)3215-3217
Number of pages3
JournalApplied Physics Letters
Volume63
Issue number23
DOIs
StatePublished - Dec 1 1993

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impedance
microwaves
electric fields
reactance
resonators
fluids
electric potential
thin films

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

Cite this

Findikoglu, A. T. ; Doughty, C. ; Anlage, S. M. ; Li, Qi ; Xi, X. X. ; Venkatesan, T. / Effect of dc electric field on the effective microwave surface impedance of YBa2Cu3O7/SrTiO3/YBa 2Cu3O7 trilayers. In: Applied Physics Letters. 1993 ; Vol. 63, No. 23. pp. 3215-3217.
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Effect of dc electric field on the effective microwave surface impedance of YBa2Cu3O7/SrTiO3/YBa 2Cu3O7 trilayers. / Findikoglu, A. T.; Doughty, C.; Anlage, S. M.; Li, Qi; Xi, X. X.; Venkatesan, T.

In: Applied Physics Letters, Vol. 63, No. 23, 01.12.1993, p. 3215-3217.

Research output: Contribution to journalArticle

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T1 - Effect of dc electric field on the effective microwave surface impedance of YBa2Cu3O7/SrTiO3/YBa 2Cu3O7 trilayers

AU - Findikoglu, A. T.

AU - Doughty, C.

AU - Anlage, S. M.

AU - Li, Qi

AU - Xi, X. X.

AU - Venkatesan, T.

PY - 1993/12/1

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AB - We have studied the effect of a dc electric field on the effective microwave surface impedance of a thin film YBa2Cu3O 7/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.

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