Doping and high-pressure study on Lu(Ni{sub 1{minus}{ital x}}{ital A}{sub {ital x}})BC with {ital A}=Cu and V
Journal Article
·
· Physical Review, B: Condensed Matter
- Department of Physics and Texas Center for Superconductivity, University of Houston, Houston, Texas 77204-5932 (United States)
The effects of doping and pressure on the superconducting transition temperature ({ital T}{sub {ital c}}) of Lu(Ni{sub 1{minus}{ital x}}{ital A}{sub {ital x}})BC with {ital A}=Cu and V have been investigated. {ital T}{sub {ital c}} was found to increase with Cu doping, but decrease with V doping, and pressure was observed to suppress all samples, doped or undoped, examined at a constant rate of {approximately}{minus}0.17{plus_minus}0.3 K/GPa. The observations are not consistent with the predicted Fermi surface of LuNiBC residing at a density-of-states peak, and the pressure effect on {ital T}{sub {ital c}} cannot be understood in terms of shift in the Fermi surface alone. {copyright} {ital 1996 The American Physical Society.}
- OSTI ID:
- 283901
- Journal Information:
- Physical Review, B: Condensed Matter, Journal Name: Physical Review, B: Condensed Matter Journal Issue: 18 Vol. 53; ISSN 0163-1829; ISSN PRBMDO
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
66 PHYSICS
BAND THEORY
BORON CARBIDES
COPPER ADDITIONS
CRYSTAL DOPING
ELECTRON-PHONON COUPLING
ENERGY-LEVEL DENSITY
FERMI LEVEL
LUTETIUM CARBIDES
NICKEL CARBIDES
PRESSURE DEPENDENCE
SUPERCONDUCTIVITY
TEMPERATURE DEPENDENCE
TEMPERATURE RANGE 0000-0013 K
TEMPERATURE RANGE 0013-0065 K
TRANSITION TEMPERATURE
VANADIUM ADDITIONS
VERY HIGH PRESSURE
BAND THEORY
BORON CARBIDES
COPPER ADDITIONS
CRYSTAL DOPING
ELECTRON-PHONON COUPLING
ENERGY-LEVEL DENSITY
FERMI LEVEL
LUTETIUM CARBIDES
NICKEL CARBIDES
PRESSURE DEPENDENCE
SUPERCONDUCTIVITY
TEMPERATURE DEPENDENCE
TEMPERATURE RANGE 0000-0013 K
TEMPERATURE RANGE 0013-0065 K
TRANSITION TEMPERATURE
VANADIUM ADDITIONS
VERY HIGH PRESSURE