Title :
Modulation of Josephson current of Nb junctions by two-dimensional scan of external magnetic field
Author :
Nakayama, Akiyoshi ; Abe, Susumu ; Morita, Tatsuyuki ; Iwata, Makoto ; Yamamoto, Yusuke
Author_Institution :
Dept. of Electr. Eng., Kanagawa Univ., Yokohama, Japan
fDate :
9/1/2000 12:00:00 AM
Abstract :
Josephson current of superconducting junctions can be modulated by an external field. This modulation of the Josephson current Ic is usually observed by one-dimensional scan of the applied magnetic field. In this paper, using two pairs of the Helmholz coils, the external magnetic field H is scanned in two dimensions and the two-dimensional surfaces of the Ic-H dependence are first measured. Modulations of Fiske steps of the current-voltage characteristics are also studied
Keywords :
Josephson effect; niobium; Fiske step; Helmholz coil; Josephson current modulation; Nb; current-voltage characteristics; external magnetic field; superconducting junction; two-dimensional scan; Current measurement; Fabrication; Josephson effect; Josephson junctions; Magnetic field measurement; Magnetic fields; Magnetic modulators; Niobium; Sputtering; Superconducting coils;
Journal_Title :
Magnetics, IEEE Transactions on
