Persistence of an ordered flux line lattice above the second peak in Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8+{delta}}

Journal Article · Fri Jun 01 00:00:00 EDT 2007 · Physical Review. B, Condensed Matter and Materials Physics

DOI:https://doi.org/10.1103/PHYSREVB.75.224512· OSTI ID:20951537

Pautrat, A; Simon, Ch; Goupil, C ^[1]; Mathieu, P ^[2]; Brulet, A ^[3]; Dewhurst, C D ^[4]; Rykov, A I ^[5]

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1. CRISMAT/ENSI-Caen, UMR 6508 du CNRS, 6 Bd Marechal Juin, 14050 Caen (France)
2. Laboratoire Pierre Aigrain de l'Ecole Normale Superieure, UMR 8551 du CNRS, Associee aux Universites Paris 6 et 7, 75231 Paris Cedex 5 (France)
3. Laboratoire Leon Brillouin, CEN Saclay, 91191 Gif-sur-Yvette (France)
4. Institut Laue Langevin, 6 rue Jules Horowitz, Grenoble (France)
5. Siberian Synchrotron Radiation Centre, Novosibirsk (Russian Federation)

We report small angle neutron scattering measurements of the flux lines lattice (FLL) in Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8+{delta}}. As previously reported, the scattered intensity decreases strongly when the magnetic field is increased, but it remains measurable far above the second peak. The direct observation of Bragg peaks proves that the characteristics of a lattice are still present. No structural features related to a symmetry breaking, such as a liquidlike or an amorphous state, can be observed. However, the associated scattered intensity is very low and is difficult to explain. We discuss the coexistence between two FLL states as a possible interpretation.

• OSTI ID: 20951537
• Journal Information: Physical Review. B, Condensed Matter and Materials Physics, Vol. 75, Issue 22; Other Information: DOI: 10.1103/PhysRevB.75.224512; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1098-0121
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
AMORPHOUS STATE
BISMUTH COMPOUNDS
BRAGG CURVE
CALCIUM COMPOUNDS
CRYSTAL LATTICES
HIGH-TC SUPERCONDUCTORS
MAGNETIC FIELDS
NEUTRON DIFFRACTION
PEAKS
SMALL ANGLE SCATTERING
STRONTIUM COMPOUNDS
SYMMETRY BREAKING