Flux lattice behavior in high- T sub c materials studied by neutron depolarization

Journal Article · Tue May 01 04:00:00 EDT 1990 · Journal of Applied Physics; (USA)

DOI:https://doi.org/10.1063/1.344862· OSTI ID:7122356

Crow, M L; Goyette, R J; Nunes, A C; Pickart, S J ^[1]; McGuire, T R; Shinde, S; Shaw, T M ^[2]

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1. University of Rhode Island, Kingston, Rhode Island 02881 (USA)
2. IBM Thomas J. Watson Research Center, Yorktown Heights, New York 10598 (USA)

The depolarization of a neutron beam passing through a sample of the high-{ital T}{sub {ital c}} superconductor YBa{sub 2}Cu{sub 3}O{sub 7{minus}{delta}} has been measured as a function of temperature and applied field. The difference in behavior between field-cooled and zero-field-cooled states, the observation of hysteresis correlated with {ital H}{sub {ital c}1}, and the disappearance of the effect near 55 K (below {ital T}{sub {ital c}}) suggest an explanation in terms of vortex line lattice formation with possible connection to recently proposed flux line entanglement and melting.

• OSTI ID: 7122356
• Journal Information: Journal of Applied Physics; (USA), Journal Name: Journal of Applied Physics; (USA) Vol. 67:9; ISSN 0021-8979; ISSN JAPIA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
656100 -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
BEAMS
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
DEPOLARIZATION
MAGNETIC FIELDS
MAGNETIC FLUX
NEUTRON BEAMS
NUCLEON BEAMS
OXIDES
OXYGEN COMPOUNDS
PARTICLE BEAMS
TEMPERATURE DEPENDENCE
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES