Upper critical field anisotropy in the Chevrel phase compound PbMo sub 6 S sub 8

Journal Article · Sun Jan 01 04:00:00 EST 1989 · Journal of Low Temperature Physics; (USA)

DOI:https://doi.org/10.1007/BF00681756· OSTI ID:5732294

Pazol, B G; Holmgren, D J; Ginsberg, D M ^[1]

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1. Univ. of Illinois, Urbana, Champaign (USA)

The anisotropy of the upper critical field, H{sub c2}, was measured on deoxygenated single crystals of the Chevrel phase compound PbMo{sub 6}S{sub 8}. The superconducting transition temperature, T{sub c}, was determined with the applied field pointing in various directions in the hexagonal (2{anti 1}0) plane. At a fixed value of the external field, T{sub c} is an oscillating function of direction. Since the H{sub c2} versus T curve is linear in the field region the authors probed, the shape of the anisotropy in T{sub c} at constant H is the same as the anisotropy of H{sub c2} at constant T. The data reflect the low-temperature symmetry of the crystal structure. Two-fold symmetry was observed in the (2{anti 1}0) plane. The data were fitted to the effective mass model with uniaxial symmetry. The anisotropy of H{sub c2} is more complex than that previously observed by the authors in Cu{sub 1.8}Mo{sub 6}S{sub 8}. They relate this observation to the structural differences of these compounds.

• OSTI ID: 5732294
• Journal Information: Journal of Low Temperature Physics; (USA), Journal Name: Journal of Low Temperature Physics; (USA) Vol. 74:1-2; ISSN 0022-2291; ISSN JLTPA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360602 -- Other Materials-- Structure & Phase Studies
360603* -- Materials-- Properties
420201 -- Engineering-- Cryogenic Equipment & Devices
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ANISOTROPY
BRIDGMAN METHOD
CHALCOGENIDES
COHERENCE LENGTH
COPPER COMPOUNDS
COPPER SULFIDES
CRITICAL FIELD
CRYSTAL FACES
CRYSTAL GROWTH METHODS
CRYSTAL LATTICES
CRYSTAL STRUCTURE
CRYSTALS
DIMENSIONS
GINZBURG-LANDAU THEORY
GRAIN ORIENTATION
HEXAGONAL LATTICES
LEAD COMPOUNDS
LEAD SULFIDES
LENGTH
MAGNETIC FIELDS
MICROSTRUCTURE
MOLYBDENUM COMPOUNDS
MOLYBDENUM SULFIDES
MONOCRYSTALS
ORIENTATION
PHYSICAL PROPERTIES
REFRACTORY METAL COMPOUNDS
SPHERICAL HARMONICS
SULFIDES
SULFUR COMPOUNDS
SUPERCONDUCTORS
SYMMETRY
TEMPERATURE MEASUREMENT
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE
TRICLINIC LATTICES