Evidence of a consolute critical point in the phase separation regime of La5 8-y Pry Ca3 8 MnO3 (y∼0.4) single crystals

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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 fr...

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Autores principales: Garbarino, G., Acha, C., Levy, P., Koo, T.Y., Cheong, S.-W.
Formato: JOUR
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_10980121_v74_n10_p_Garbarino
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling todo:paper_10980121_v74_n10_p_Garbarino2023-10-03T16:05:59Z Evidence of a consolute critical point in the phase separation regime of La5 8-y Pry Ca3 8 MnO3 (y∼0.4) single crystals Garbarino, G. Acha, C. Levy, P. Koo, T.Y. Cheong, S.-W. 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. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_10980121_v74_n10_p_Garbarino
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
description 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.
format JOUR
author Garbarino, G.
Acha, C.
Levy, P.
Koo, T.Y.
Cheong, S.-W.
spellingShingle 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
author_facet Garbarino, G.
Acha, C.
Levy, P.
Koo, T.Y.
Cheong, S.-W.
author_sort Garbarino, G.
title Evidence of a consolute critical point in the phase separation regime of La5 8-y Pry Ca3 8 MnO3 (y∼0.4) single crystals
title_short Evidence of a consolute critical point in the phase separation regime of La5 8-y Pry Ca3 8 MnO3 (y∼0.4) single crystals
title_full Evidence of a consolute critical point in the phase separation regime of La5 8-y Pry Ca3 8 MnO3 (y∼0.4) single crystals
title_fullStr Evidence of a consolute critical point in the phase separation regime of La5 8-y Pry Ca3 8 MnO3 (y∼0.4) single crystals
title_full_unstemmed Evidence of a consolute critical point in the phase separation regime of La5 8-y Pry Ca3 8 MnO3 (y∼0.4) single crystals
title_sort evidence of a consolute critical point in the phase separation regime of la5 8-y pry ca3 8 mno3 (y∼0.4) single crystals
url http://hdl.handle.net/20.500.12110/paper_10980121_v74_n10_p_Garbarino
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