Absence of fractional giant Shapiro steps in diagonal Josephson-junction arrays

Journal Article · Mon Jul 01 04:00:00 EDT 1991 · Physical Review, B: Condensed Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.44.925· OSTI ID:5552966

Sohn, L L; Rzchowski, M S; Free, J U; Benz, S P; Tinkham, M ^[1]; Lobb, C J ^[2]

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1. Department of Physics and Division of Applied Sciences, Harvard University, Cambridge, Massachusetts 02138 (USA)
2. Center for Superconductivity Research, Department of Physics, University of Maryland, College Park, Maryland 20742 (USA)

When rf and dc bias currents are injected {ital diagonally} into an {ital N}{times}{ital M} Josephson-junction array and a perpendicular magnetic field is applied, .ulfractional giant Shapiro steps are unexpectedly absent, although giant Shapiro steps are still observed. This absence is in direct contrast to observations in the usual case of in-line current injection and to theoretical predictions. Numerical simulations confirm these experimental results. A theoretical argument is presented to explain why diagonal Josephson-junction arrays cannot support fractional giant Shapiro steps.

• OSTI ID: 5552966
• Journal Information: Physical Review, B: Condensed Matter; (United States), Journal Name: Physical Review, B: Condensed Matter; (United States) Vol. 44:2; ISSN 0163-1829; ISSN PRBMD
• Country of Publication: United States
• Language: English

Related Subjects

426001* -- Engineering-- Superconducting Devices & Circuits-- (1990-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
COMPUTERIZED SIMULATION
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
JOSEPHSON JUNCTIONS
JUNCTIONS
MAGNETIC FIELDS
PHYSICAL PROPERTIES
SIMULATION
SUPERCONDUCTING JUNCTIONS