Experimental study of thermoelectricity in superconducting indium

Journal Article · Sat Mar 01 04:00:00 EST 1980 · Phys. Rev., B: Condens. Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.21.1842· OSTI ID:5601067

Van Harlingen, D J; Heidel, D F; Garland, J C

This paper reports on a comprehensive study of thermoelectricity in pure superconducting indium near the transition temperature. The samples consisted of hollow bimetallic toroids of lead and indium. Upon application of a temperature gradient, a magnetic flux was produced within the hollow cavity of the toroids which could be coupled, via a superconducting flux transformer, into a superconducting quantum interference device magnetometer. The thermoelectric origins of the magnetic flux and the experimental method are discussed in detail. The magnetic flux was measured in seven specimens, and in each was found to diverge as the transition temperature was approached with a (1-T/T/sub c/)/sup -3/2/ power-law dependence. The magnitude of the flux varied by about a factor of forty among the different samples and appeared to scale with the normal-state thermoelectric properties of the indium. Tests intended to eliminate possible spurious causes for the magnetic flux are also discussed.

• Research Organization: Department of Physics, Ohio State University, Columbus, Ohio 43210
• OSTI ID: 5601067
• Journal Information: Phys. Rev., B: Condens. Matter; (United States), Journal Name: Phys. Rev., B: Condens. Matter; (United States) Vol. 21:5; ISSN PRBMD
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360104* -- Metals & Alloys-- Physical Properties
656102 -- Solid State Physics-- Superconductivity-- Acoustic
Electronic
Magnetic
Optical
& Thermal Phenomena-- (-1987)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELEMENTS
INDIUM
MAGNETIC FLUX
METALS
PHYSICAL PROPERTIES
SUPERCONDUCTIVITY
SUPERCONDUCTORS
THERMODYNAMIC PROPERTIES
THERMOELECTRIC PROPERTIES
TRANSITION TEMPERATURE
TYPE-I SUPERCONDUCTORS