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)


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.


Field Effect Gate Voltage Test Structure Gate Insulator YBCO Film 
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  1. 1.
    J. Mannhart, Changes in the superconducting properties of high-Ta cuprates produced by applied electric fields, Mod. Phys. Lett. B 6: 555 (1992).CrossRefGoogle Scholar
  2. 2.
    J. Mannhart, D. G. Schlom, J. G. Bednorz, and K. A. Muller, Influence of electric fields on pinning in YBa2Cu3O7_8 films, Phys. Rev. Lett. 67: 2099 (1991).CrossRefGoogle Scholar
  3. 3.
    X. X. Xi, Q. Li, C. Doughty, C. Kwon, S. Bhattacharya, A. T. Findikoglu, and T. Venkatesan, Electric field effect in high Tc superconducting ultrathin YBa2Cu3O7_x films, Appl. Phys. Leu. 59: 3470 (1991).CrossRefGoogle Scholar
  4. 4.
    G. Brorsson, Yu. Boikov, Z. G. Ivanov, and T. Claeson, Field effect devices based on metal-insulatorYBa2Cu307_x films, IEEE Trans. Appl. Supercond. 3: 2922 (1993).CrossRefGoogle Scholar
  5. 5.
    J. Mannhart, J. Strobel, J. G. Bednorz, and Ch. Gerber, Large electric field effects in YBa2Cu307_8 films containing weak links, Appl. Phys. Lett. 62: 630 (1993).CrossRefGoogle Scholar
  6. 6.
    N. Chandrasekhar, Oriol T. Valls, and A. M. Goldman, Mechanism for electric field effects observed in YBa2Cu307_x films, Phys. Rev. Lett. 71: 1079 (1993).CrossRefGoogle Scholar
  7. 7.
    See, e.g., B. W. Veal, J. Z. Liu, A. P. Paulikas, K. Vandervoort, H. Claus, J. C. Campuzano, C. Olson, A.-B. Yang, R. Liu, C. Gu, R. S. List, A. J. Arko, and R. Bartlett, Photoelectron spectroscopy study of YBa2Cu3Ox with varied oxygen stoichiometry: possible evidence for strong coupling superconductivity, Physica C 158: 276 (1989).Google Scholar
  8. 8.
    W. Xiong, W. Kula, and R. Sobolewski, Fabrication of high-Tc superconducting electronic devices using the laser-writing technique, in Advances in Cryogenic Engineering—Materials, Vol. 40, Plenum, New York (1994).Google Scholar
  9. 9.
    R. Sobolewski, W. Xiong, W. Kula, and J. R. Gavaler, Laser patterning of Y-Ba-Cu-O thin-film circuits, Appl. Phys. Lett. (submitted for publication).Google Scholar
  10. 10.
    R. Sobolewski, W. Xiong, W. Kula, and B. McIntyre, Electrical and structural properties of the YBCO superconducting-semiconducting interface, Physica B (to be published).Google Scholar
  11. 11.
    C. Ceder, R. P. McCormack, and D. de Fontaine, Time-dependent oxygen ordering and its effect on Tc in off-stoichiometric YBa2Cu30x, Phys. Rev. B 44: 2377 (1991).CrossRefGoogle Scholar
  12. 12.
    W. Kula and R. Sobolewski, Charging effect in partially oxygen-depleted Y-Ba-Cu-O thin films, in preparation.Google Scholar

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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