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Abstract:

Experiments of oscillatory dynamics in twinned Y Ba2 Cu3 O7 (YBCO) crystals in a dc magnetic field tilted with respect to the twin planes indicate that history effects (HEs) in these samples cannot be ascribed to an equilibration process but have its origin in the oscillatory character of the vortex dynamics. However, the role that extended twin boundaries play in the HEs of YBCO crystals has been the subject of controversies until now. In this work, we study the role of correlated defects in the dynamic history effects by performing angular ac susceptibility measurements in twinned and detwinned YBCO crystals. We confirm that in any case, whenever HEs are observed, the temporal symmetry of the shaking ac field plays a major role. © 2007 The American Physical Society.

Registro:

Documento: Artículo
Título:Oscillatory dynamics in the vortex matter of twinned and untwinned Y Ba2 Cu3 O7 crystals
Autor:Pasquini, G.; Luna, D.; Nieva, G.
Filiación:Laboratorio de Bajas Temperaturas, Departamento de Física, Ciudad Universitaria, C1428EGA Buenos Aires, Argentina
Instituto Balseiro, CAB, Comisión Nacional de Energía Atómica, Avenida Bustillo Km 8.5, R8401BLA Bariloche, Argentina
Año:2007
Volumen:76
Número:21
DOI: http://dx.doi.org/10.1103/PhysRevB.76.212302
Título revista:Physical Review B - Condensed Matter and Materials Physics
Título revista abreviado:Phys. Rev. B Condens. Matter Mater. Phys.
ISSN:10980121
CODEN:PRBMD
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10980121_v76_n21_p_Pasquini

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Citas:

---------- APA ----------
Pasquini, G., Luna, D. & Nieva, G. (2007) . Oscillatory dynamics in the vortex matter of twinned and untwinned Y Ba2 Cu3 O7 crystals. Physical Review B - Condensed Matter and Materials Physics, 76(21).
http://dx.doi.org/10.1103/PhysRevB.76.212302
---------- CHICAGO ----------
Pasquini, G., Luna, D., Nieva, G. "Oscillatory dynamics in the vortex matter of twinned and untwinned Y Ba2 Cu3 O7 crystals" . Physical Review B - Condensed Matter and Materials Physics 76, no. 21 (2007).
http://dx.doi.org/10.1103/PhysRevB.76.212302
---------- MLA ----------
Pasquini, G., Luna, D., Nieva, G. "Oscillatory dynamics in the vortex matter of twinned and untwinned Y Ba2 Cu3 O7 crystals" . Physical Review B - Condensed Matter and Materials Physics, vol. 76, no. 21, 2007.
http://dx.doi.org/10.1103/PhysRevB.76.212302
---------- VANCOUVER ----------
Pasquini, G., Luna, D., Nieva, G. Oscillatory dynamics in the vortex matter of twinned and untwinned Y Ba2 Cu3 O7 crystals. Phys. Rev. B Condens. Matter Mater. Phys. 2007;76(21).
http://dx.doi.org/10.1103/PhysRevB.76.212302