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. 2015 Oct 1;5:14604. doi: 10.1038/srep14604

Figure 4. Shapiro steps.

Figure 4

(a) The Shapiro steps in V(j) characteristics for the pinning period of Inline graphic. V0 indicates the Shapiro step at first resonance. (b) The resonant behavior in V(τ) for different values of magnetic field indicates possible Shapiro steps in magnetoresistivity. (c) The resonant behavior in V(τ) is also found for varied disorder, i.e. varied inelastic phonon-electron scattering time, with effective influence on the viscosity of the superconducting condensate (parameter γ in the theory, see Methods).