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Abstract:

The fishtail magnetization observed in many type II superconductors has been investigated since the earliest nineties and associated with different phase transitions and dynamic crossovers in complex vortex matter. In systems without a sharp order-disorder phase transition, the fishtail has been related with a crossover from elastic to plastic vortex creep regimes. In this paper we perform a critical revision of this accepted picture. We show that, in slightly underdoped YBa2Cu3O7-δ single crystals, there is a clear correlation between the fishtail magnetization and the Peak Effect observed in ac experiments with the associated history effects. We propose that both features are originated in the same dynamic crossover, between two plastic creep regimes. The proposed picture can also apply to other system, as those belonging to same families of iron-based pnictides. © 2014 Elsevier B.V. All rights reserved.

Registro:

Documento: Artículo
Título:A revision of the fishtail effect in YBa2Cu3O7-δ crystals and its connection with vortex dynamics
Autor:Pérez Daroca, D.; Pasquini, G.
Filiación:Departamento de Física, FCEyN, Ciudad Universitaria, Pabellon 1, Buenos Aires, 1428, Argentina
Gerencia de Investigación y Aplicaciones, Comisión Nacional de Energía Atómica and CONICET, Av. General Paz 1499, San Martín, Buenos Aires, 1650, Argentina
Palabras clave:74.25.Uv YBCO; Fishtail magnetization; History effects; Peak Effect; Vortex creep regimes; Creep; Magnetization; Single crystals; Yttrium barium copper oxides; 74.25.Uv YBCO; Creep regime; Dynamic crossover; History effects; Order disorder phase transitions; Peak effects; Type II superconductors; Vortex dynamics; Vortex flow
Año:2015
Volumen:508
Página de inicio:31
Página de fin:35
DOI: http://dx.doi.org/10.1016/j.physc.2014.10.017
Título revista:Physica C: Superconductivity and its Applications
Título revista abreviado:Phys C Supercond Appl
ISSN:09214534
CODEN:PHYCE
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09214534_v508_n_p31_PerezDaroca

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Citas:

---------- APA ----------
Pérez Daroca, D. & Pasquini, G. (2015) . A revision of the fishtail effect in YBa2Cu3O7-δ crystals and its connection with vortex dynamics. Physica C: Superconductivity and its Applications, 508, 31-35.
http://dx.doi.org/10.1016/j.physc.2014.10.017
---------- CHICAGO ----------
Pérez Daroca, D., Pasquini, G. "A revision of the fishtail effect in YBa2Cu3O7-δ crystals and its connection with vortex dynamics" . Physica C: Superconductivity and its Applications 508 (2015) : 31-35.
http://dx.doi.org/10.1016/j.physc.2014.10.017
---------- MLA ----------
Pérez Daroca, D., Pasquini, G. "A revision of the fishtail effect in YBa2Cu3O7-δ crystals and its connection with vortex dynamics" . Physica C: Superconductivity and its Applications, vol. 508, 2015, pp. 31-35.
http://dx.doi.org/10.1016/j.physc.2014.10.017
---------- VANCOUVER ----------
Pérez Daroca, D., Pasquini, G. A revision of the fishtail effect in YBa2Cu3O7-δ crystals and its connection with vortex dynamics. Phys C Supercond Appl. 2015;508:31-35.
http://dx.doi.org/10.1016/j.physc.2014.10.017