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INTEGRATION OF LASER MBE GROWN OXIDE THIN FILMS OFSrTiO3WITHYBa2Cu3OyFOR TUNABLE APPLICATIONS

Author

Listed:
  • J. H. HAO

    (Department of Applied Physics, The Hong Kong Polytechnic University, Hung Hom, Hong Kong, P. R. China)

  • J. GAO

    (Department of Physics, The University of Hong Kong, Pokfulam Road, Hong Kong, P. R. China)

Abstract

The frequency tuning can be achieved by integratingSrTiO3(STO) thin films into high-temperature superconductingYBa2Cu3Oy(YBCO) devices and tuning the dielectric constant of the STO films by an electrical bias. We have fabricated epitaxial STO thin films on superconducting YBCO. By the combination of various surface characterizations such as scanning probe microscope, structural and dielectric measurements, we attempted to understand the fundamental mechanisms of dielectric properties in STO thin films. Substrate surface and structural properties of the heterostructure were studied. We have measured the temperature dependence of dielectric constant and loss tangent of STO thin films. The system exhibits 41% dielectric constant tuning over a bias of 4 V at low temperature.

Suggested Citation

  • J. H. Hao & J. Gao, 2007. "INTEGRATION OF LASER MBE GROWN OXIDE THIN FILMS OFSrTiO3WITHYBa2Cu3OyFOR TUNABLE APPLICATIONS," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 14(04), pages 833-836.
    • Handle: RePEc:wsi:srlxxx:v:14:y:2007:i:04:n:s0218625x07010123
    DOI: 10.1142/S0218625X07010123
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