A new route to the Mott-Hubbard metal-insulator transition: Strong correlations effects in Pr0.7 Ca0.3 MnO3

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Resistive random access memory based on the resistive switching phenomenon is emerging as a strong candidate for next generation non-volatile memory. So far, the resistive switching effect has been observed in many transition metal oxides, including strongly correlated ones, such as, cuprate superco...

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Autores principales: Lee, H.S., Choi, S.G., Park, H.-H., Rozenberg, M.J.
Formato: Artículo publishedVersion
Lenguaje:Inglés
Publicado: 2013
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_20452322_v3_n_p_Lee
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paperaa:paper_20452322_v3_n_p_Lee
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spelling paperaa:paper_20452322_v3_n_p_Lee2023-06-12T16:51:55Z A new route to the Mott-Hubbard metal-insulator transition: Strong correlations effects in Pr0.7 Ca0.3 MnO3 Sci. Rep. 2013;3 Lee, H.S. Choi, S.G. Park, H.-H. Rozenberg, M.J. Resistive random access memory based on the resistive switching phenomenon is emerging as a strong candidate for next generation non-volatile memory. So far, the resistive switching effect has been observed in many transition metal oxides, including strongly correlated ones, such as, cuprate superconductors, colossal magnetoresistant manganites and Mott insulators. However, up to now, no clear evidence of the possible relevance of strong correlation effects in the mechanism of resistive switching has been reported. Here, we study Pr 0.7 Ca0.3 MnO3, which shows bipolar resistive switching. Performing micro-spectroscopic studies on its bare surface we are able to track the systematic electronic structure changes in both, the low and high resistance state. We find that a large change in the electronic conductance is due to field-induced oxygen vacancies, which drives a Mott metal-insulator transition at the surface. Our study demonstrates that strong correlation effects may be incorporated to the realm of the emerging oxide electronics. Fil:Rozenberg, M.J. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2013 info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion application/pdf eng info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_20452322_v3_n_p_Lee
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
language Inglés
orig_language_str_mv eng
description Resistive random access memory based on the resistive switching phenomenon is emerging as a strong candidate for next generation non-volatile memory. So far, the resistive switching effect has been observed in many transition metal oxides, including strongly correlated ones, such as, cuprate superconductors, colossal magnetoresistant manganites and Mott insulators. However, up to now, no clear evidence of the possible relevance of strong correlation effects in the mechanism of resistive switching has been reported. Here, we study Pr 0.7 Ca0.3 MnO3, which shows bipolar resistive switching. Performing micro-spectroscopic studies on its bare surface we are able to track the systematic electronic structure changes in both, the low and high resistance state. We find that a large change in the electronic conductance is due to field-induced oxygen vacancies, which drives a Mott metal-insulator transition at the surface. Our study demonstrates that strong correlation effects may be incorporated to the realm of the emerging oxide electronics.
format Artículo
Artículo
publishedVersion
author Lee, H.S.
Choi, S.G.
Park, H.-H.
Rozenberg, M.J.
spellingShingle Lee, H.S.
Choi, S.G.
Park, H.-H.
Rozenberg, M.J.
A new route to the Mott-Hubbard metal-insulator transition: Strong correlations effects in Pr0.7 Ca0.3 MnO3
author_facet Lee, H.S.
Choi, S.G.
Park, H.-H.
Rozenberg, M.J.
author_sort Lee, H.S.
title A new route to the Mott-Hubbard metal-insulator transition: Strong correlations effects in Pr0.7 Ca0.3 MnO3
title_short A new route to the Mott-Hubbard metal-insulator transition: Strong correlations effects in Pr0.7 Ca0.3 MnO3
title_full A new route to the Mott-Hubbard metal-insulator transition: Strong correlations effects in Pr0.7 Ca0.3 MnO3
title_fullStr A new route to the Mott-Hubbard metal-insulator transition: Strong correlations effects in Pr0.7 Ca0.3 MnO3
title_full_unstemmed A new route to the Mott-Hubbard metal-insulator transition: Strong correlations effects in Pr0.7 Ca0.3 MnO3
title_sort new route to the mott-hubbard metal-insulator transition: strong correlations effects in pr0.7 ca0.3 mno3
publishDate 2013
url http://hdl.handle.net/20.500.12110/paper_20452322_v3_n_p_Lee
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