Anisotropic Strain Induced Directional Metallicity in Highly Epitaxial LaBaCo(2)O(5.5+δ) Thin Films on (110) NdGaO(3)

Highly directional-dependent metal-insulator transition is observed in epitaxial double perovskite LaBaCo(2)O(5.5+δ) films. The film exhibit metallic along [100], but remain semiconducting along [010] under application of a magnetic field parallel to the surface of the film. The physical origin for...

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Autores principales: Ma, Chunrui, Han, Dong, Liu, Ming, Collins, Gregory, Wang, Haibin, Xu, Xing, Lin, Yuan, Jiang, Jiechao, Zhang, Shengbai, Chen, Chonglin
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2016
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5116752/
https://www.ncbi.nlm.nih.gov/pubmed/27869137
http://dx.doi.org/10.1038/srep37337
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author Ma, Chunrui
Han, Dong
Liu, Ming
Collins, Gregory
Wang, Haibin
Xu, Xing
Lin, Yuan
Jiang, Jiechao
Zhang, Shengbai
Chen, Chonglin
author_facet Ma, Chunrui
Han, Dong
Liu, Ming
Collins, Gregory
Wang, Haibin
Xu, Xing
Lin, Yuan
Jiang, Jiechao
Zhang, Shengbai
Chen, Chonglin
author_sort Ma, Chunrui
collection PubMed
description Highly directional-dependent metal-insulator transition is observed in epitaxial double perovskite LaBaCo(2)O(5.5+δ) films. The film exhibit metallic along [100], but remain semiconducting along [010] under application of a magnetic field parallel to the surface of the film. The physical origin for the properties is identified as in-plane tensile strain arising from oxygen vacancies. First-principle calculations suggested the tensile strain drastically alters the band gap, and the vanishing gap opens up [100] conduction channels for Fermi-surface electrons. Our observation of strain-induced highly directional-dependent metal-insulator transition may open up new dimension for multifunctional devices.
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spelling pubmed-51167522016-11-28 Anisotropic Strain Induced Directional Metallicity in Highly Epitaxial LaBaCo(2)O(5.5+δ) Thin Films on (110) NdGaO(3) Ma, Chunrui Han, Dong Liu, Ming Collins, Gregory Wang, Haibin Xu, Xing Lin, Yuan Jiang, Jiechao Zhang, Shengbai Chen, Chonglin Sci Rep Article Highly directional-dependent metal-insulator transition is observed in epitaxial double perovskite LaBaCo(2)O(5.5+δ) films. The film exhibit metallic along [100], but remain semiconducting along [010] under application of a magnetic field parallel to the surface of the film. The physical origin for the properties is identified as in-plane tensile strain arising from oxygen vacancies. First-principle calculations suggested the tensile strain drastically alters the band gap, and the vanishing gap opens up [100] conduction channels for Fermi-surface electrons. Our observation of strain-induced highly directional-dependent metal-insulator transition may open up new dimension for multifunctional devices. Nature Publishing Group 2016-11-21 /pmc/articles/PMC5116752/ /pubmed/27869137 http://dx.doi.org/10.1038/srep37337 Text en Copyright © 2016, The Author(s) 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 to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
spellingShingle Article
Ma, Chunrui
Han, Dong
Liu, Ming
Collins, Gregory
Wang, Haibin
Xu, Xing
Lin, Yuan
Jiang, Jiechao
Zhang, Shengbai
Chen, Chonglin
Anisotropic Strain Induced Directional Metallicity in Highly Epitaxial LaBaCo(2)O(5.5+δ) Thin Films on (110) NdGaO(3)
title Anisotropic Strain Induced Directional Metallicity in Highly Epitaxial LaBaCo(2)O(5.5+δ) Thin Films on (110) NdGaO(3)
title_full Anisotropic Strain Induced Directional Metallicity in Highly Epitaxial LaBaCo(2)O(5.5+δ) Thin Films on (110) NdGaO(3)
title_fullStr Anisotropic Strain Induced Directional Metallicity in Highly Epitaxial LaBaCo(2)O(5.5+δ) Thin Films on (110) NdGaO(3)
title_full_unstemmed Anisotropic Strain Induced Directional Metallicity in Highly Epitaxial LaBaCo(2)O(5.5+δ) Thin Films on (110) NdGaO(3)
title_short Anisotropic Strain Induced Directional Metallicity in Highly Epitaxial LaBaCo(2)O(5.5+δ) Thin Films on (110) NdGaO(3)
title_sort anisotropic strain induced directional metallicity in highly epitaxial labaco(2)o(5.5+δ) thin films on (110) ndgao(3)
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5116752/
https://www.ncbi.nlm.nih.gov/pubmed/27869137
http://dx.doi.org/10.1038/srep37337
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