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.
Original language | English |
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Pages (from-to) | 3740-3744 |
Number of pages | 5 |
Journal | Journal of Applied Physics |
Volume | 85 |
Issue number | 7 |
DOIs | |
Publication status | Published - 1999 Apr 1 |
ASJC Scopus subject areas
- Physics and Astronomy(all)