Magnetic-flux entry into aligned Pb-Cd eutectic composites in the proximity-effect regime

Journal Article · Sun Oct 01 00:00:00 EDT 1978 · Phys. Rev., B: Solid State; (United States)

DOI:https://doi.org/10.1103/PhysRevB.18.3305· OSTI ID:6867271

Zaitlin, M P

The thermal conductivity of Pb-Cd lamellar eutectic composites was measured as a function of the applied magnetic field from 1 to 8 K. The directions of heat flow and magnetic field were parallel to each other and to the lamellae. For samples of large periodicity, the data are consistent with the theory of Dobrosavljevic and de Gennes in which the magnetic flux enters the Cd lamellae in the form of quantized vortices. The resulting decrease in thermal conductivity is interpreted in terms of Andreev scattering of quasiparticles at the pair-potential barrier of a vortex. These results are compared with similar measurements by Deutscher et al. on vapor-deposited Pb-Ag-Pb films.

• Research Organization: Ames Laboratory--U. S. Department of Energy, Iowa State University, Ames, Iowa 50011
• OSTI ID: 6867271
• Journal Information: Phys. Rev., B: Solid State; (United States), Journal Name: Phys. Rev., B: Solid State; (United States) Vol. 18:7; ISSN PLRBA
• 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
ALLOYS
CADMIUM ALLOYS
COMPOSITE MATERIALS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
EUTECTICS
LAMELLAE
LEAD ALLOYS
MAGNETIC FLUX
PHYSICAL PROPERTIES
PROXIMITY EFFECT
SUPERCONDUCTING COMPOSITES
SUPERCONDUCTIVITY
THERMAL CONDUCTIVITY
THERMODYNAMIC PROPERTIES
ULTRALOW TEMPERATURE
VORTICES