Investigation of bridge and tunnel contacts made from Nb/sub 3/Ge films

Journal Article · Sun May 01 04:00:00 EDT 1983 · Sov. Phys. - Solid State (Engl. Transl.); (United States)

OSTI ID:5556901

Golovashkin, A I; Lykov, A N; Pechen', E V

An investigation was made of the properties of tunnel and bridge contacts based on superconducting Nb/sub 3/Ge films. These Nb/sub 3/Ge films were formed by the method of cathodic sputtering. Two values of the energy gap ..delta../sub m/ = 1.3 meV and ..delta../sub b/ = 3.6 meV, associated with the occurrence of two superconducting phases, were observed and it was found that 2..delta../sub b//kT/sub c/ = 4.3. Gaps of subharmonics and Fiske steps were observed. Bridge contacts, formed by double scribing, exhibited step-like current-voltage characteristics in a wide range of temperatures. The step structure was attributed to synchronization of the motion of vortices by an external microwave field.

• Research Organization: P. N. Lebedev Physics Institute, Academy of Sciences of the USSR, Moscow
• OSTI ID: 5556901
• Journal Information: Sov. Phys. - Solid State (Engl. Transl.); (United States), Journal Name: Sov. Phys. - Solid State (Engl. Transl.); (United States) Vol. 25:5; ISSN SPSSA
• Country of Publication: United States
• Language: English

Related Subjects

420201* -- Engineering-- Cryogenic Equipment & Devices
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CATHODE SPUTTERING
ELECTRIC BRIDGES
ELECTRIC CONDUCTIVITY
ELECTRIC CONTACTS
ELECTRICAL EQUIPMENT
ELECTRICAL PROPERTIES
ELECTROMAGNETIC RADIATION
ENERGY GAP
EQUIPMENT
FABRICATION
FILMS
GERMANIUM COMPOUNDS
JUNCTIONS
MICROWAVE RADIATION
NIOBIUM COMPOUNDS
PHYSICAL PROPERTIES
RADIATIONS
SPUTTERING
SUPERCONDUCTING FILMS
SUPERCONDUCTING JUNCTIONS
SYNTHESIS
TRANSITION ELEMENT COMPOUNDS
TUNNEL EFFECT
VORTICES