Time-dependent equations for phase differences and a collective mode in Josephson-coupled layered superconductors

Journal Article · Tue Nov 01 04:00:00 EST 1994 · Physical Review, B: Condensed Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.50.12831· OSTI ID:6946640

Bulaevskii, L N ^[1]; Zamora, M; Baeriswyl, D ^[2]; Beck, H ^[3]; Clem, J R ^[4]

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1. Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)
2. Institut de Physique Theorique, Universite de Fribourg, Perolles, CH-1700 Fribourg (Switzerland)
3. Institut de Physique, Univesite de Neuchatel, Rue A.-L. Breguet 1, 2000 Neuchatel (Switzerland)
4. Ames Laboratory and Department of Physics and Astronomy, Iowa State University, Ames, Iowa 50011 (United States)

A time-dependent equation for the interlayer phase differences is derived for Josephson-coupled layered superconductors. It generalizes the sine-Gordon equation for the phase in a standard Josephson junction to the case of multilayer systems. With the help of this equation, the dispersion of a collective mode is found at low temperatures. In highly anisotropic systems the gap in the spectrum of this mode lies below the superconducting gap and is suppressed strongly by a magnetic field parallel to the layers. The effect of this mode on the dielectric function and specific heat is calculated.

• DOE Contract Number: W-7405-ENG-82
• OSTI ID: 6946640
• Journal Information: Physical Review, B: Condensed Matter; (United States), Journal Name: Physical Review, B: Condensed Matter; (United States) Vol. 50:17; ISSN 0163-1829; ISSN PRBMDO
• Country of Publication: United States
• Language: English

Related Subjects

665411* -- Basic Superconductivity Studies-- (1992-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
COLLECTIVE EXCITATIONS
ENERGY GAP
ENERGY-LEVEL TRANSITIONS
EQUATIONS
EXCITATION
FIELD EQUATIONS
HIGH-TC SUPERCONDUCTORS
JOSEPHSON JUNCTIONS
JUNCTIONS
LAYERS
MAGNETIC FIELDS
PERMITTIVITY
PHASE SHIFT
PHYSICAL PROPERTIES
SINE-GORDON EQUATION
SPECIFIC HEAT
SUPERCONDUCTING JUNCTIONS
SUPERCONDUCTORS
TEMPERATURE DEPENDENCE
THERMODYNAMIC PROPERTIES
TIME DEPENDENCE