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Properties of all YBa2Cu3O7 Josephson edge junctions prepared by in situ laser ablation deposition (1991)

Koren, G. ; Aharoni, E. ; Polturak, E. ; [et al.]

Woodbury, NY : American Institute of Physics (AIP)

Applied Physics Letters 58 (1991), S. 634-636

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ISSN: 1077-3118

Source: AIP Digital Archive

Topics: Physics

Notes: Thin-film YBa2Cu3O7-YBa2Cu3O7 edge junctions of 0.4×10 μm2 cross section were prepared in situ by a multistep laser ablation deposition process. The fabrication time was about 3 h and the yield of good devices was 50%. Typical junctions reached zero resistance at 72 K and had a critical current density Jc of 300 A/cm2 at 70 K. Their Jc as a function of temperature increased slowly with decreasing temperature down to 65 K and much faster below it. In the region of low Jc we observed suppression of the critical current by a magnetic field. Under microwave radiation clear Shapiro steps were observed whose magnitude versus the microwave field agreed qualitatively with the resistively shunted junction model of a current biased junction.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1063/1.104552

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