New Vortex-Matter Size Effect Observed in Bi{sub 2}Sr{sub 2}CaCu{sub 2}O

Journal Article · Mon Apr 16 00:00:00 EDT 2001 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.86.3626· OSTI ID:40205757

Wang, Y M; Fuhrer, M S; Zettl, A; Ooi, S; Tamegai, T

The vortex-matter 3D to 2D phase transition is studied in micron-sized Bi{sub 2}Sr {sub 2}CaCu{sub 2}O{sub 8+{delta}} single crystals using local Hall magnetization measurements. At a given temperature, the second magnetization peak, the signature of a possible 3D--2D vortex phase transition, disappears for samples smaller than a critical length. We suggest that this critical length should be equated with the 2D vortex lattice ab -plane correlation length R{sup 2D}{sub c} . The magnitude and temperature dependence of R{sup 2D}{sub c} agree well with Larkin-Ovchinnikov collective pinning theory.

• Sponsoring Organization: (US)
• OSTI ID: 40205757
• Journal Information: Physical Review Letters, Vol. 86, Issue 16; Other Information: DOI: 10.1103/PhysRevLett.86.3626; Othernumber: PRLTAO000086000016003626000001; 025116PRL; PBD: 16 Apr 2001; ISSN 0031-9007
• Publisher: The American Physical Society
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
MAGNETIZATION
MONOCRYSTALS
TEMPERATURE DEPENDENCE