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Fermi Level shifting, Charge Transfer and Induced Magnetic Coupling at La(0.7)Ca(0.3)MnO(3)/LaNiO(3) Interface
A large magnetic coupling has been observed at the La(0.7)Ca(0.3)MnO(3)/LaNiO(3) (LCMO/LNO) interface. The x-ray photoelectron spectroscopy (XPS) study results show that Fermi level continuously shifted across the LCMO/LNO interface in the interface region. In addition, the charge transfer between M...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group
2015
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4327574/ https://www.ncbi.nlm.nih.gov/pubmed/25676088 http://dx.doi.org/10.1038/srep08460 |
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author | Ning, Xingkun Wang, Zhanjie Zhang, Zhidong |
author_facet | Ning, Xingkun Wang, Zhanjie Zhang, Zhidong |
author_sort | Ning, Xingkun |
collection | PubMed |
description | A large magnetic coupling has been observed at the La(0.7)Ca(0.3)MnO(3)/LaNiO(3) (LCMO/LNO) interface. The x-ray photoelectron spectroscopy (XPS) study results show that Fermi level continuously shifted across the LCMO/LNO interface in the interface region. In addition, the charge transfer between Mn and Ni ions of the type Mn(3+) − Ni(3+) → Mn(4+) − Ni(2+) with the oxygen vacancies are observed in the interface region. The intrinsic interfacial charge transfer can give rise to itinerant electrons, which results in a “shoulder feature” observed at the low binding energy in the Mn 2p core level spectra. Meanwhile, the orbital reconstruction can be mapped according to the Fermi level position and the charge transfer mode. It can be considered that the ferromagnetic interaction between Ni(2+) and Mn(4+) gives rise to magnetic regions that pin the ferromagnetic LCMO and cause magnetic coupling at the LCMO/LNO interface. |
format | Online Article Text |
id | pubmed-4327574 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2015 |
publisher | Nature Publishing Group |
record_format | MEDLINE/PubMed |
spelling | pubmed-43275742015-02-23 Fermi Level shifting, Charge Transfer and Induced Magnetic Coupling at La(0.7)Ca(0.3)MnO(3)/LaNiO(3) Interface Ning, Xingkun Wang, Zhanjie Zhang, Zhidong Sci Rep Article A large magnetic coupling has been observed at the La(0.7)Ca(0.3)MnO(3)/LaNiO(3) (LCMO/LNO) interface. The x-ray photoelectron spectroscopy (XPS) study results show that Fermi level continuously shifted across the LCMO/LNO interface in the interface region. In addition, the charge transfer between Mn and Ni ions of the type Mn(3+) − Ni(3+) → Mn(4+) − Ni(2+) with the oxygen vacancies are observed in the interface region. The intrinsic interfacial charge transfer can give rise to itinerant electrons, which results in a “shoulder feature” observed at the low binding energy in the Mn 2p core level spectra. Meanwhile, the orbital reconstruction can be mapped according to the Fermi level position and the charge transfer mode. It can be considered that the ferromagnetic interaction between Ni(2+) and Mn(4+) gives rise to magnetic regions that pin the ferromagnetic LCMO and cause magnetic coupling at the LCMO/LNO interface. Nature Publishing Group 2015-02-13 /pmc/articles/PMC4327574/ /pubmed/25676088 http://dx.doi.org/10.1038/srep08460 Text en Copyright © 2015, Macmillan Publishers Limited. All rights reserved http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article's Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder in order to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
spellingShingle | Article Ning, Xingkun Wang, Zhanjie Zhang, Zhidong Fermi Level shifting, Charge Transfer and Induced Magnetic Coupling at La(0.7)Ca(0.3)MnO(3)/LaNiO(3) Interface |
title | Fermi Level shifting, Charge Transfer and Induced Magnetic Coupling at La(0.7)Ca(0.3)MnO(3)/LaNiO(3) Interface |
title_full | Fermi Level shifting, Charge Transfer and Induced Magnetic Coupling at La(0.7)Ca(0.3)MnO(3)/LaNiO(3) Interface |
title_fullStr | Fermi Level shifting, Charge Transfer and Induced Magnetic Coupling at La(0.7)Ca(0.3)MnO(3)/LaNiO(3) Interface |
title_full_unstemmed | Fermi Level shifting, Charge Transfer and Induced Magnetic Coupling at La(0.7)Ca(0.3)MnO(3)/LaNiO(3) Interface |
title_short | Fermi Level shifting, Charge Transfer and Induced Magnetic Coupling at La(0.7)Ca(0.3)MnO(3)/LaNiO(3) Interface |
title_sort | fermi level shifting, charge transfer and induced magnetic coupling at la(0.7)ca(0.3)mno(3)/lanio(3) interface |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4327574/ https://www.ncbi.nlm.nih.gov/pubmed/25676088 http://dx.doi.org/10.1038/srep08460 |
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