Title :
Microwave-induced steps observed in Bi-2212 intrinsic Josephson junctions
Author :
Tachiki, Takashi ; Someya, Shinjiro ; Uchida, Takashi ; Yasuoka, Yoshizumi
Author_Institution :
Dept. of Electr. & Electron. Eng., Nat. Defense Acad., Yokosuka, Japan
fDate :
6/1/2005 12:00:00 AM
Abstract :
Microwave-induced steps observed in the I-V characteristics of Bi-2212 intrinsic Josephson junctions are investigated and the mechanism producing the zero-crossing steps is discussed. It is found that (1) a junction area smaller than 40 μm2 shows uniform in-plane distribution of the c-axis dc current and (2) the zero-crossing steps are observed in the uniform distribution. The observation of steps in samples of different sizes under the uniform current condition indicates that the observed steps are produced by the inverse ac Josephson effect.
Keywords :
Josephson effect; bismuth compounds; calcium compounds; critical currents; high-temperature superconductors; step response; strontium compounds; superconducting junction devices; Bi-2212 intrinsic Josephson junctions; Bi2Sr2CaCu2O8; I-V characteristics; high temperature superconductors; inverse ac Josephson effect; microwave induced steps; uniform in-plane distribution; zero crossing steps; Critical current; Crystals; Current distribution; Electromagnetic scattering; High temperature superconductors; Josephson effect; Josephson junctions; Plasma waves; Superconducting microwave devices; Voltage; High frequency response; Josephson junction; high-temperature superconductors;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2005.849745
