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

doi:10.1063/1.110202

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

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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 ∥δR_s/δV_dc∥∼0.25 μΩ/V and ∥δX_s/δV_dc∥∼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 language	English (US)
Pages (from-to)	3215-3217
Number of pages	3
Journal	Applied Physics Letters
Volume	63
Issue number	23
DOIs	https://doi.org/10.1063/1.110202
State	Published - 1993

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

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10.1063/1.110202

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

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.",

author = "Findikoglu, {A. T.} and C. Doughty and Anlage, {S. M.} and Qi Li and Xi, {X. X.} and T. Venkatesan",

year = "1993",

doi = "10.1063/1.110202",

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volume = "63",

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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

Y1 - 1993

N2 - 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.

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

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