Open AccessTHE STEP STRUCTURES EFFECT OF DC JOSEPHSON CURRENT WITHIN ONE FLUX QUANTUM PERIOD φ0(Ⅱ)—— JOSEPHSON JUNCTION WITH LARGER DIMENSIONS
Author(s) -
张裕恒,
沈秀玲,
郑捷飞,
吴彦,
汪茂泉
Publication year - 1984
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.33.1075
Subject(s) - josephson effect , physics , pi josephson junction , condensed matter physics , magnetic flux quantum , superconducting tunnel junction , magnetic field , electromagnetic field , field (mathematics) , magnetic flux , mode (computer interface) , superconductivity , quantum mechanics , computer science , mathematics , pure mathematics , operating system
We point out that by placing a large Josephson junction in high Q-value cavity whose rth eigen mode is excited by the Josephson frequency ω0=2cV0/h, the oscillating electromagnetic field will act on the juntion and one must recognize that the space part of the eigen mode of the field are not the same on the junction. We have obained theoretical result which is different from paper [2] and shows how the step structure current vary with the magnetic field. The match condition for eigen mode of the feedback field from the cavity and electromagnetic field radiated by Josephson junction has been worked out. Finally, the physical reason for the absence of step structure with period less than φ0 is given.