Simultaneous excitation of low-frequency cavity modes in short Josephson tunnel junctions

Journal Article · Fri Jan 01 04:00:00 EST 1982 · Phys. Rev. B: Condens. Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.25.151· OSTI ID:5846180

Chang, J; Chen, J T; Scheuermann, M R

We have studied the simultaneous excitation of the two lowest-frequency cavity modes in a Josephson tunnel junction free from an external magnetic field. Specifically, we have calculated the dc tunneling current contributed by the excitation of these modes when the junction is biased at a voltage V = nh..nu../sub c/(2e) with n = 1 and 2 and ..nu../sub c/ being the fundamental frequency of the cavity mode. In general, the direct current depends upon the decay rates of the modes. For V = 2h..nu../sub c//(2e), we found that it can be as large as 0.55I/sub 0/(T). Here I/sub 0/(T) is the temperature-dependent zero-voltage Josephson critical current of the junction. Furthermore, if the decay rates for the cavity modes are small, multiple solutions for the junction current exist, which fact implies a fine structure in the current voltage characteristics. For V = hv/sub c//(2e) the direct current contributed by the cavity modes is zero as long as no magnetic field is applied.

• Research Organization: Department of Physics, Wayne State University, Detroit, Michigan 48202
• OSTI ID: 5846180
• Journal Information: Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 25:1; ISSN PRBMD
• Country of Publication: United States
• Language: English

Related Subjects

656102* -- Solid State Physics-- Superconductivity-- Acoustic
Electronic
Magnetic
Optical
& Thermal Phenomena-- (-1987)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CAVITY RESONATORS
ELECTRICAL PROPERTIES
ELECTRONIC EQUIPMENT
EQUIPMENT
FREQUENCY DEPENDENCE
JOSEPHSON JUNCTIONS
JUNCTIONS
MAGNETIC FIELDS
PHYSICAL PROPERTIES
RESONATORS
SUPERCONDUCTING CAVITY RESONATORS
SUPERCONDUCTING DEVICES
SUPERCONDUCTING JUNCTIONS
TUNNEL EFFECT