The viscous drag on mobile dislocations in type-II superconductors

The viscous drag on mobile dislocations in type-II superconductors

The difference in the stress for plastic deformation between the mixed state and the superconducting state has been measured in a series of lead-indium crystals. These measurements show that the change in drag stress between the two states varies in the same manner as does the ultrasonic attenuation...

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Veröffentlicht in:J. Appl. Phys.; (United States) 1978-01, Vol.49 (1), p.333-337
Hauptverfasser: Pang, C. S., Lin, T. H., Galligan, J. M.
Format: Artikel
Sprache:eng
Schlagworte:
360104 - Metals & Alloys- Physical Properties
ALLOYS
CRYSTAL DEFECTS
CRYSTAL STRUCTURE
CRYSTALS
DAMPING
DEFORMATION
DISLOCATIONS
DRAG
ELASTICITY
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
FLOW STRESS
INDIUM ALLOYS
LEAD ALLOYS
LEAD BASE ALLOYS
LINE DEFECTS
MAGNETIC FIELDS
MAGNETIZATION
MATERIALS SCIENCE
MECHANICAL PROPERTIES
MIXED STATE
MONOCRYSTALS
ORDER PARAMETERS
PHYSICAL PROPERTIES
PLASTICITY
STRESS ANALYSIS
STRESSES
SUPERCONDUCTIVITY
SUPERCONDUCTORS
TENSILE PROPERTIES
THERMODYNAMIC PROPERTIES
THERMOELASTICITY
TRANSITION TEMPERATURE
TYPE-II SUPERCONDUCTORS
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Beschreibung
Zusammenfassung:The difference in the stress for plastic deformation between the mixed state and the superconducting state has been measured in a series of lead-indium crystals. These measurements show that the change in drag stress between the two states varies in the same manner as does the ultrasonic attenuation in a type-II superconductor. Quantitative agreement between the present results and Maki’s theory of transport properties in dirty superconductors is found for higher solute concentration crystals. These results show that dislocation motion in these lead-indium alloys can be treated as an underdamped oscillator.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.324391