Intrinsic Josephson junctions in oxygen-deficient YBa2Cu3Q7-δ film deposited on a substrate step

H. B. Wang; J. Chen; T. Tachiki; Y. Mizugaki; K. Nakajima; T. Yamashita

doi:10.1063/1.369741

Intrinsic Josephson junctions in oxygen-deficient YBa₂Cu₃Q_7-δ film deposited on a substrate step

H. B. Wang, J. Chen, T. Tachiki, Y. Mizugaki, K. Nakajima, T. Yamashita

Research Institute of Electrical Communication (RIEC)

Research output: Contribution to journal › Article › peer-review

17 Citations (Scopus)

Abstract

Using c-axis-oriented oxygen-deficient YBa₂Cu₃O_7-δ film deposited across a low-angle step on a SrTiO₃ substrate, we successfully demonstrated intrinsic Josephson effects. In addition to several voltage jumps of large amplitudes (a few millivolts) and remarkable hysteresis on the dc current-voltage curves, we observed upturns on the current-voltage curves under microwave irradiation which appeared at increasingly high voltages with increasing microwave power. We proposed to explain this observation in terms of high-order microwave-induced Shapiro steps.

Original language	English
Pages (from-to)	3740-3744
Number of pages	5
Journal	Journal of Applied Physics
Volume	85
Issue number	7
DOIs	https://doi.org/10.1063/1.369741
Publication status	Published - 1999 Apr 1

ASJC Scopus subject areas

Physics and Astronomy(all)

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abstract = "Using c-axis-oriented oxygen-deficient YBa2Cu3O7-δ film deposited across a low-angle step on a SrTiO3 substrate, we successfully demonstrated intrinsic Josephson effects. In addition to several voltage jumps of large amplitudes (a few millivolts) and remarkable hysteresis on the dc current-voltage curves, we observed upturns on the current-voltage curves under microwave irradiation which appeared at increasingly high voltages with increasing microwave power. We proposed to explain this observation in terms of high-order microwave-induced Shapiro steps.",

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AU - Wang, H. B.

AU - Chen, J.

AU - Tachiki, T.

AU - Mizugaki, Y.

AU - Nakajima, K.

AU - Yamashita, T.

PY - 1999/4/1

Y1 - 1999/4/1

N2 - Using c-axis-oriented oxygen-deficient YBa2Cu3O7-δ film deposited across a low-angle step on a SrTiO3 substrate, we successfully demonstrated intrinsic Josephson effects. In addition to several voltage jumps of large amplitudes (a few millivolts) and remarkable hysteresis on the dc current-voltage curves, we observed upturns on the current-voltage curves under microwave irradiation which appeared at increasingly high voltages with increasing microwave power. We proposed to explain this observation in terms of high-order microwave-induced Shapiro steps.

AB - Using c-axis-oriented oxygen-deficient YBa2Cu3O7-δ film deposited across a low-angle step on a SrTiO3 substrate, we successfully demonstrated intrinsic Josephson effects. In addition to several voltage jumps of large amplitudes (a few millivolts) and remarkable hysteresis on the dc current-voltage curves, we observed upturns on the current-voltage curves under microwave irradiation which appeared at increasingly high voltages with increasing microwave power. We proposed to explain this observation in terms of high-order microwave-induced Shapiro steps.

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Intrinsic Josephson junctions in oxygen-deficient YBa₂Cu₃Q_7-δ film deposited on a substrate step

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