A millimeter wave Josephson mixer employing a high-T c GdBaCuO point contact
- 15 December 1987
- journal article
- letter
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 62 (12) , 4923-4926
- https://doi.org/10.1063/1.339003
Abstract
We have investigated a Josephson effect heterodyne mixer for the millimeter wave band employing high‐Tc GdBaCuO point contacts. Mixer performance was in qualitative agreement with theory. A mixing response was observed up to 55 K, the highest operating temperature achieved for such a device to date. The voltage separation of rf‐induced steps gave a value of h/2e=2.08×10−15 V s which is in excellent agreement with the value expected for Cooper pairs. In addition, the temperature dependence of the I0R product was found to agree with Bardeen–Cooper–Schrieffer theory in the weak coupling limit.This publication has 14 references indexed in Scilit:
- Observations of the a.c. Josephson Effect in High- T c YBaCuO Point ContactsEurophysics Letters, 1987
- Point-contact electron tunneling into the high-superconductor Y-Ba-Cu-OPhysical Review B, 1987
- Tunneling Spectroscopy of Y-Ba-Cu-O CompoundJapanese Journal of Applied Physics, 1987
- Superconductivity above liquid nitrogen temperature: preparation and properties of a family of perovskite-based superconductorsJournal of the American Chemical Society, 1987
- Superconductivity at 93 K in a new mixed-phase Y-Ba-Cu-O compound system at ambient pressurePhysical Review Letters, 1987
- Possible highT c superconductivity in the Ba?La?Cu?O systemZeitschrift für Physik B Condensed Matter, 1986
- High quality tantalum superconducting tunnel junctions for microwave mixing in the quantum limitApplied Physics Letters, 1986
- Quantum detection at millimeter wavelengthsReviews of Modern Physics, 1985
- Tunneling Between SuperconductorsPhysical Review Letters, 1963
- Die thermodynamischen Funktionen des SupraleitersThe European Physical Journal A, 1959