Low-temperature thermopower of (SN)/sub x/

Journal Article · Sat Dec 01 00:00:00 EST 1979 · Phys. Rev., B: Condens. Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.20.4450· OSTI ID:5741249

Azevedo, L J; Chaikin, P M; Clark, W G; Fuller, W W; Hammann, J

Measurements of the thermoelectric power of (SN)/sub x/ are reported over the temperature range 0.15-- 4.2 K for magnetic fields of 0 --15 kOe applied parallel and perpendicular to the fiber axis. Above 1 K, the thermopower is large, negative, and dominated by phonon drag, which indicates that electrons contribute more to the electrical conductivity than do holes, and that the phonons are predominately scattered by the electrons. As the temperature is decreased below 1 K in zero field, an increase in the thermopower is observed which is attributed to the Kondo effect. This increase is terminated at the superconducting transition temperature, where the thermopower drops to zero. With the application of a magnetic field, a complicated behavior is observed below 1 K which is attributed to a combination of the quenching of superconductivity, superconducting fluctuations, magnetic impurities, and the Kondo effect.

• Research Organization: Physics Department, University of California, Los Angeles, California 90024
• OSTI ID: 5741249
• Journal Information: Phys. Rev., B: Condens. Matter; (United States), Vol. 20:11
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
SULFUR NITRIDES
KONDO EFFECT
SEEBECK EFFECT
SUPERCONDUCTIVITY
FILAMENTS
POLYMERS
TEMPERATURE DEPENDENCE
THERMOMAGNETISM
ULTRALOW TEMPERATURE
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
MAGNETISM
NITRIDES
NITROGEN COMPOUNDS
PHYSICAL PROPERTIES
PNICTIDES
SULFUR COMPOUNDS
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