Simulations and interpretation of fractional giant Shapiro steps in two-dimensional Josephson-junction arrays

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

DOI:https://doi.org/10.1103/PhysRevB.44.4601· OSTI ID:5127040

Octavio, M ^[1]; Free, J U ^[2]; Benz, S P ^[3]; Newrock, R S; Mast, D B ^[4]; Lobb, C J ^[5]

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1. Centro de Fisica, Instituto Venezolano de Investigaciones Cientificas, Apartado 21827, Caracas 1020A (Venezuela)
2. Eastern Nazarene College, Quincy, Massachusetts (USA) Physics Department, Harvard University, Cambridge, Massachusetts (USA)
3. Physics Department, Harvard University, Cambridge, Massachusetts (USA)
4. Department of Physics, University of Cincinnati, Cincinnati, Ohio (USA)
5. Center for Superconductivity Research, Department of Physics, University of Maryland, College Park, Maryland (USA)

We present simulations of two-dimensional Josephson-junction arrays to study giant Shapiro steps in these arrays. The amplitude and frequency dependence of the step widths is found to be more complex than in single junctions. The fractional step widths are found to decrease more rapidly with increasing frequency or rf current than conventional steps in single junctions. The washboard model of single junctions is extended to arrays to explain these differences between arrays and single junctions.

• OSTI ID: 5127040
• Journal Information: Physical Review, B: Condensed Matter; (United States), Journal Name: Physical Review, B: Condensed Matter; (United States) Vol. 44:9; ISSN PRBMD; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

656100* -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
AMPLITUDES
COMPUTERIZED SIMULATION
CRYSTAL STRUCTURE
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
FREQUENCY DEPENDENCE
GRAIN BOUNDARIES
HIGH-TC SUPERCONDUCTORS
JOSEPHSON JUNCTIONS
JUNCTIONS
MAGNETIC FLUX
MICROSTRUCTURE
PHYSICAL PROPERTIES
RF SYSTEMS
SIMULATION
SUPERCONDUCTING JUNCTIONS
SUPERCONDUCTORS
SUPERLATTICES
TWO-DIMENSIONAL CALCULATIONS