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Electric-Field-Effect Devices Based on Partially Oxygen-Depleted, Superconducting Y-Ba-Cu-O Thin Films

  • Witold Kula
  • Roman Sobolewski
Part of the An International Cryogenic Materials Conference Publication book series (ACRE, volume 40)

Abstract

The electric-field effect in metal-insulator-YBa2Cu3Ox (YBCO) superconductor, thin-film structures with thick (~200 nm), partially oxygen-depleted YBCO channels was investigated. The devices were fabricated with a laser-writing patterning technique, which is based on laser-heating-induced local changes of the oxygen content in a YBCO film. A thin, amorphous YBCO layer, deposited on the top of a patterned film, or, alternatively, a whole film substrate, were used as gate insulators. A number of test structures, with oxygen-deficient (superconducting at 10–60 K) channels and fully oxygenated (superconducting above 85 K) source and drain electrodes, were fabricated and measured. Our results indicate that the field effect observed in our samples is related to the charge-transfer effects associated with field-enhanced modifications of the crystalline order in YBCO.

Keywords

Field Effect Gate Voltage Test Structure Gate Insulator YBCO Film 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media New York 1994

Authors and Affiliations

  • Witold Kula
    • 1
    • 2
  • Roman Sobolewski
    • 1
    • 2
  1. 1.Department of Electrical Engineering and Laboratory for Laser EnergeticsUniversity of Rochester RochesterUSA
  2. 2.Institute of PhysicsPolish Academy of SciencesWarszawaPoland

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