Properties of artificial grain boundary weak links grown on Y-ZrO<sub>2</sub> bicrystals
Z G Ivanov; P A Nilsson; D Winkler; J A Alarco; G Brorsson; T Claeson; E A Stepantsov; A Ya Tzalenchuk; Z G Ivanov; Dept. of Phys., Chalmers Univ. of Technol., Goteborg, Sweden; P A Nilsson; Dept. of Phys., Chalmers Univ. of Technol., Goteborg, Sweden; D Winkler; Dept. of Phys., Chalmers Univ. of Technol., Goteborg, Sweden; J A Alarco; Dept. of Phys., Chalmers Univ. of Technol., Goteborg, Sweden; G Brorsson; Dept. of Phys., Chalmers Univ. of Technol., Goteborg, Sweden; T Claeson; Dept. of Phys., Chalmers Univ. of Technol., Goteborg, Sweden; E A Stepantsov; Dept. of Phys., Chalmers Univ. of Technol., Goteborg, Sweden; A Ya Tzalenchuk; Dept. of Phys., Chalmers Univ. of Technol., Goteborg, Sweden
Журнал:
Superconductor Science and Technology
Дата:
1991-09-01
Аннотация:
Weak links were fabricated by pulsed laser deposition of YBa<sub>2</sub>Cu<sub>3</sub>O<sub>x</sub> thin films on Y-ZrO<sub>2</sub> bicrystal substrates. They were formed by transferring the bicrystal boundary into the epitaxial film during the film growth. Their properties were determined by the misorientation angle ( theta ) between the two halves of the bicrystal. The transport properties of the weak links were studied as a function of theta and an exponential dependence of the weak link critical current density was observed for angles up to 45 degrees . Clear Josephson effects with good microwave and magnetic field response were observed.
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