? (b) When no RF power is applied,
what is the phase difference of phase across the junction at I=1.0mA?
(c) When RF radiation is applied, Shapiro steps are formed.
Judging from the figure, what is the frequency of the microwave
radiation?
© Kwok-Wai Ng, 1998.
5. Josephson Tunneling Experimental data from a
Josephson junction is shown in the figure. (a) What is the critical
current ? (b) When no RF power is applied,
what is the phase difference of phase across the junction at I=1.0mA?
(c) When RF radiation is applied, Shapiro steps are formed.
Judging from the figure, what is the frequency of the microwave
radiation?
(a) Critical current is the maximum current at zero bias (V=0).
Judging from the figure, 
~ 1.85 mA.
(b)
(c)
