Higher-order effects on Shapiro steps in Josephson junctions

Journal Article · Fri Jan 01 04:00:00 EST 1999 · Physical Review, B: Condensed Matter

DOI:https://doi.org/10.1103/PhysRevB.59.58· OSTI ID:289199

Rasmussen, K O; Zharnitsky, V ^[1]; Mitkov, I ^[1]

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1. Theoretical Division and Center for Nonlinear Studies, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)

We demonstrate that the well known phase-locking mechanism leading to Shapiro steps in ac-driven Josephson junctions is always accompanied by a higher-order phase-locking mechanism similar to that of the parametrically driven pendulum. This effect, resulting in a {pi}-periodic effective potential for the phase, manifests itself clearly in the parameter regions where the usual Shapiro steps are expected to vanish. {copyright} {ital 1999} {ital The American Physical Society}

• OSTI ID: 289199
• Journal Information: Physical Review, B: Condensed Matter, Journal Name: Physical Review, B: Condensed Matter Journal Issue: 1 Vol. 59; ISSN 0163-1829; ISSN PRBMDO
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
JOSEPHSON EFFECT
JOSEPHSON JUNCTIONS
MODE LOCKING