Squid-based picovoltmeter for measuring resistance of metals at low temperatures and volt-ampere characteristics of superconductor structures

Journal Article · Sun Jun 01 00:00:00 EDT 1986 · Instrum. Exp. Tech. (Engl. Transl.); (United States)

OSTI ID:5329475

Krasnopolin, I Y

This paper describes apparatus for measuring the electrical conductivity of metals and alloys at low temperatures as well as for recording the volt-ampere characteristics of superconductor structures in which the voltmeter is a radio-frequency squid with negative voltage feedback from the output of the electronic unit of the squid to the input measuring circuit. The principal components of the apparatus are shown. The squid-based picovoltmeter with voltage feedback can measure the resistances of pure metals and the volt-ampere characteristics of superconductor structures with a voltage resolution of 10/sup -12/-10/sup -14/ V with a dynamic range of ca 100 dB.

• Research Organization: All-Union Sci-Res. Institute of the Metrological Service, Moscow
• OSTI ID: 5329475
• Journal Information: Instrum. Exp. Tech. (Engl. Transl.); (United States), Vol. 28:6, PT. 2
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
36 MATERIALS SCIENCE
SUPERCONDUCTORS
ELECTRIC CONDUCTIVITY
VOLTMETERS
PERFORMANCE
SQUID DEVICES
ALLOYS
BERYLLIUM ALLOYS
COPPER ALLOYS
CRYOGENICS
FEEDBACK
METALS
NIOBIUM ALLOYS
POWER SUPPLIES
RESISTORS
RESOLUTION
RF SYSTEMS
SUPERCONDUCTING WIRES
ELECTRIC MEASURING INSTRUMENTS
ELECTRICAL EQUIPMENT
ELECTRICAL PROPERTIES
ELECTRONIC EQUIPMENT
ELEMENTS
EQUIPMENT
FLUXMETERS
MEASURING INSTRUMENTS
MICROWAVE EQUIPMENT
PHYSICAL PROPERTIES
SUPERCONDUCTING DEVICES
WIRES
420201* - Engineering- Cryogenic Equipment & Devices
360104 - Metals & Alloys- Physical Properties