Comparison of p and He channeling across T sub c in YBa sub 2 Cu sub 3 O sub 7 minus x

Journal Article · Sat Jun 01 04:00:00 EDT 1991 · Physical Review, B: Condensed Matter; (USA)

DOI:https://doi.org/10.1103/PhysRevB.43.13711· OSTI ID:5561171

Sharma, R P; Rehn, L E; Baldo, P M ^[1]

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1. Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439 (USA)

Measurements are reported for the temperature dependence of both the minimum yield and critical angle during ion channeling with proton ({ital p}) and {sup 4}He beams, in high-quality single crystals of YBa{sub 2}Cu{sub 3}O{sub 7{minus}{ital x}}. Rutherford backscattering and characteristic x-ray yields were acquired between 25 and 300 K, with primary attention given to temperatures near the superconducting transition {ital T}{sub {ital c}}. For both {ital p} and He channeling, an abrupt increase ({similar to}7%) in the critical angle and a decrease ({approx lt}10%) in the minimum yield were found as the specimen temperature was lowered through {ital T}{sub {ital c}}. No evidence was found for an increase in minimum yield at {ital T}{sub {ital c}}, as reported previously for deuterium channeling in YBa{sub 2}Cu{sub 3}O{sub 7{minus}{ital x}} (T. Haga {ital et} {ital al}., Phys. Rev. B 41, 826 (1990)). The x-ray results confirm that the anomalous changes found across {ital T}{sub {ital c}} involve only displacements of the Cu(1 and 2) and O(4) atoms.

• Research Organization: Argonne National Laboratory (ANL), Argonne, IL
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 5561171
• Journal Information: Physical Review, B: Condensed Matter; (USA), Journal Name: Physical Review, B: Condensed Matter; (USA) Vol. 43:16; ISSN PRBMD; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
656003 -- Condensed Matter Physics-- Interactions between Beams & Condensed Matter-- (1987-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
BARYONS
CHALCOGENIDES
CHANNELING
CHARGED PARTICLES
COPPER COMPOUNDS
COPPER OXIDES
CRYSTALS
ELECTROMAGNETIC RADIATION
ELEMENTARY PARTICLES
FERMIONS
HADRONS
HELIUM IONS
HIGH-TC SUPERCONDUCTORS
INCIDENCE ANGLE
ION CHANNELING
IONIZING RADIATIONS
IONS
MONOCRYSTALS
NUCLEONS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
PROTONS
RADIATIONS
SUPERCONDUCTORS
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE
X RADIATION
YTTRIUM COMPOUNDS
YTTRIUM OXIDES