Instability of superconducting state in Josephson tunnel junctions

Journal Article · Wed Feb 01 04:00:00 EST 1984 · Sov. Phys. - Solid State (Engl. Transl.); (United States)

OSTI ID:6610925

Nevirkovets, I P; Rudenko, = M

Experiments on low-resistance Josephson Sn--I--Sn tunnel junctions have shown the superconductor to exhibit an instability that manifests itself on the current--voltage characteristic (IVC) in the form of a jumplike decrease of the voltage when it reaches a value 2..delta../e. When a weak magnetic field H is applied parallel to the junction plane and suppresses the nonstationary Josephson effect, the negative-slope IVC section vanishes. The H-dependent instability-current component, as well as the dc component of the Josephson current near 2..delta../e, can be approximated by a function of H/sup -2/. The singularity observed is attributed to the presence of a maximum of the superconducting component, due to the Riedel singularity, at V = 2..delta../e.

• Research Organization: Institute of Metal Physics, Academy of Sciences of the Ukrainian SSR, Kiev
• OSTI ID: 6610925
• Journal Information: Sov. Phys. - Solid State (Engl. Transl.); (United States), Journal Name: Sov. Phys. - Solid State (Engl. Transl.); (United States) Vol. 26:2; ISSN SPSSA
• Country of Publication: United States
• Language: English

Related Subjects

420201* -- Engineering-- Cryogenic Equipment & Devices
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
DATA
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELEMENTS
EXPERIMENTAL DATA
INFORMATION
INSTABILITY
JOSEPHSON JUNCTIONS
JUNCTIONS
MAGNETIC FIELDS
METALS
NUMERICAL DATA
PHYSICAL PROPERTIES
SINGULARITY
SUPERCONDUCTING JUNCTIONS
SUPERCONDUCTIVITY
TIN
ULTRALOW TEMPERATURE