Anomalous magnetic field dependence of ultrasmall, low critical current Josephson junctions

Journal Article · Mon May 04 04:00:00 EDT 1981 · Phys. Rev. Lett.; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.46.1238· OSTI ID:6204827

Rogovin, D; Nagel, J

We examine the response of an ultrasmall, low--critical-current Josephson junction to an external magnetic field. We find that the dc supercurrent exhibits an anomalous field dependence which reflects large-amplitude phase fluctuations. These fluctuations, which arise from zero-point charge oscillations, cannot be described within the context of conventional linear theories.

• Research Organization: Science Applications, Inc., La Jolla, California 92038
• OSTI ID: 6204827
• Journal Information: Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 46:18; ISSN PRLTA
• Country of Publication: United States
• Language: English

Related Subjects

420201* -- Engineering-- Cryogenic Equipment & Devices
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CURRENTS
DIFFERENTIAL EQUATIONS
ELECTRIC CHARGES
ELECTRIC CURRENTS
EQUATIONS
FLUCTUATIONS
JOSEPHSON JUNCTIONS
JUNCTIONS
MAGNETIC FIELDS
OSCILLATIONS
PARTIAL DIFFERENTIAL EQUATIONS
PLASMONS
QUASI PARTICLES
SCHROEDINGER EQUATION
SUPERCONDUCTING JUNCTIONS
VARIATIONS
WAVE EQUATIONS