Peak effect as a precursor to vortex lattice melting in single crystal YBa[sub 2]Cu[sub 3]O[sub 7[minus][delta]]
Journal Article
·
· Physical Review Letters; (United States)
- Materials Science Division and Science and Technology Center for Superconductivity, Argonne National Laboratory, Argonne, Illinois 60439 (United States)
We present direct evidence of a peak effect'' as a precursor to vortex lattice melting in a single crystal of YBa[sub 2]Cu[sub 3]O[sub 7[minus][delta]] containing only two twin planes. The peak effect occurs just below the vortex liquid to solid phase transition in a narrow field region between 0.3 and 1.5 T for [ital H][parallel][bold c] and is clearly observed as a function of both magnetic field and temperature. We demonstrate that the peak effect is due to enhanced vortex pinning by the twin boundaries, indicative of lattice softening prior to melting. In addition, we show evidence for a non-Ohmic behavior in the vortex liquid state due to depinning of the vortices from the two twin boundaries with increasing Lorentz force.
- Research Organization:
- Argonne National Laboratory (ANL), Argonne, IL
- DOE Contract Number:
- W-31109-ENG-38
- OSTI ID:
- 6893943
- Journal Information:
- Physical Review Letters; (United States), Journal Name: Physical Review Letters; (United States) Vol. 73:19; ISSN 0031-9007; ISSN PRLTAO
- Country of Publication:
- United States
- Language:
- English
Similar Records
Anisotropy and Lorentz-force dependence of twin-boundary pinning and its effect on flux-lattice melting in single-crystal YBa[sub 2]Cu[sub 3]O[sub 7[minus][delta]]
Vortex shear modulus and lattice melting in twin boundary channels of YBa{sub {bold 2}}Cu{sub {bold 3}}O{sub {bold 7{minus}}}{ital {delta}}
Suppression of the first order vortex melting transition by intrinsic pinning in YBa[sub 2]Cu[sub 3]O[sub 7[minus][delta]]
Journal Article
·
Tue Jun 01 00:00:00 EDT 1993
· Physical Review, B: Condensed Matter; (United States)
·
OSTI ID:6611406
Vortex shear modulus and lattice melting in twin boundary channels of YBa{sub {bold 2}}Cu{sub {bold 3}}O{sub {bold 7{minus}}}{ital {delta}}
Journal Article
·
Sat Jun 01 00:00:00 EDT 1996
· Physical Review Letters
·
OSTI ID:285771
Suppression of the first order vortex melting transition by intrinsic pinning in YBa[sub 2]Cu[sub 3]O[sub 7[minus][delta]]
Journal Article
·
Sun Feb 13 23:00:00 EST 1994
· Physical Review Letters; (United States)
·
OSTI ID:5185687
Related Subjects
36 MATERIALS SCIENCE
360207* -- Ceramics
Cermets
& Refractories-- Superconducting Properties-- (1992-)
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
CRYSTALS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
HIGH-TC SUPERCONDUCTORS
MAGNETIC FIELDS
MELTING
MONOCRYSTALS
OXIDES
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
SUPERCONDUCTORS
TEMPERATURE DEPENDENCE
TRANSITION ELEMENT COMPOUNDS
TWINNING
VORTICES
YTTRIUM COMPOUNDS
YTTRIUM OXIDES
360207* -- Ceramics
Cermets
& Refractories-- Superconducting Properties-- (1992-)
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
CRYSTALS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
HIGH-TC SUPERCONDUCTORS
MAGNETIC FIELDS
MELTING
MONOCRYSTALS
OXIDES
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
SUPERCONDUCTORS
TEMPERATURE DEPENDENCE
TRANSITION ELEMENT COMPOUNDS
TWINNING
VORTICES
YTTRIUM COMPOUNDS
YTTRIUM OXIDES