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Abstract:

We report on the dc and pulsed electric field sensitivity of the resistance of mixed valent Mn-oxide-based La5 8-y Pry Ca3 8 MnO3 (y∼0.4) single crystals as a function of temperature. The low-temperature regime of the resistivity is highly current and voltage dependent. An irreversible transition from high to low resistivity (LR) is obtained upon the increase of the electric field up to a temperature-dependent critical value (Vc). The current-voltage characteristics in the LR regime as well as the lack of a variation in the magnetization response when Vc is reached indicate the formation of a non-singly-connected filamentary conducting path. The obtained temperature dependence of Vc has a critical behavior similar to the one observed in binary liquid mixtures near their consolute point. © 2006 The American Physical Society.

Registro:

Documento: Artículo
Título:Evidence of a consolute critical point in the phase separation regime of La5 8-y Pry Ca3 8 MnO3 (y∼0.4) single crystals
Autor:Garbarino, G.; Acha, C.; Levy, P.; Koo, T.Y.; Cheong, S.-W.
Filiación:Laboratorio de Bajas Temperaturas, Departamento de Física, Ciudad Universitaria, (C1428EHA) Buenos Aires, Argentina
Departamento de Física, CAC, Comisión Nacional de Energía Atómica, Gral Paz 1499, 1650 San Martín, Buenos Aires, Argentina
Pohang Accelerator Laboratory, Pohang University of Science and Technology, Pohang, 790-784, South Korea
Rutgers Center for Emergent Materials, Department of Physics and Astronomy, Rutgers University, Piscataway, NJ 08854, United States
Año:2006
Volumen:74
Número:10
DOI: http://dx.doi.org/10.1103/PhysRevB.74.100401
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_v74_n10_p_Garbarino

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Citas:

---------- APA ----------
Garbarino, G., Acha, C., Levy, P., Koo, T.Y. & Cheong, S.-W. (2006) . Evidence of a consolute critical point in the phase separation regime of La5 8-y Pry Ca3 8 MnO3 (y∼0.4) single crystals. Physical Review B - Condensed Matter and Materials Physics, 74(10).
http://dx.doi.org/10.1103/PhysRevB.74.100401
---------- CHICAGO ----------
Garbarino, G., Acha, C., Levy, P., Koo, T.Y., Cheong, S.-W. "Evidence of a consolute critical point in the phase separation regime of La5 8-y Pry Ca3 8 MnO3 (y∼0.4) single crystals" . Physical Review B - Condensed Matter and Materials Physics 74, no. 10 (2006).
http://dx.doi.org/10.1103/PhysRevB.74.100401
---------- MLA ----------
Garbarino, G., Acha, C., Levy, P., Koo, T.Y., Cheong, S.-W. "Evidence of a consolute critical point in the phase separation regime of La5 8-y Pry Ca3 8 MnO3 (y∼0.4) single crystals" . Physical Review B - Condensed Matter and Materials Physics, vol. 74, no. 10, 2006.
http://dx.doi.org/10.1103/PhysRevB.74.100401
---------- VANCOUVER ----------
Garbarino, G., Acha, C., Levy, P., Koo, T.Y., Cheong, S.-W. Evidence of a consolute critical point in the phase separation regime of La5 8-y Pry Ca3 8 MnO3 (y∼0.4) single crystals. Phys. Rev. B Condens. Matter Mater. Phys. 2006;74(10).
http://dx.doi.org/10.1103/PhysRevB.74.100401