Induced ferromagnetism at BiFeO3/YBa2Cu3O7 interfaces

Transition metal oxides (TMOs) exhibit many emergent phenomena ranging from high-temperature superconductivity and giant magnetoresistance to magnetism and ferroelectricity. In addition, when TMOs are interfaced with each other, new functionalities can arise, which are absent in individual component...

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Main Authors: Wen, Xiao-Dong, Haraldsen, J. T., He, Mi, Panagopoulos, C., Zhu, Jian-Xin, Chia, Elbert E. M.
Other Authors: School of Physical and Mathematical Sciences
Format: Article
Language:English
Published: 2014
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Online Access:https://hdl.handle.net/10356/104800
http://hdl.handle.net/10220/20269
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1048002023-02-28T19:43:35Z Induced ferromagnetism at BiFeO3/YBa2Cu3O7 interfaces Wen, Xiao-Dong Haraldsen, J. T. He, Mi Panagopoulos, C. Zhu, Jian-Xin Chia, Elbert E. M. School of Physical and Mathematical Sciences Physics and Applied Physics Transition metal oxides (TMOs) exhibit many emergent phenomena ranging from high-temperature superconductivity and giant magnetoresistance to magnetism and ferroelectricity. In addition, when TMOs are interfaced with each other, new functionalities can arise, which are absent in individual components. Here, we report results from first-principles calculations on the magnetism at the BiFeO3/YBa2Cu3O7 interfaces. By comparing the total energy for various magnetic spin configurations inside BiFeO3, we are able to show that a metallic ferromagnetism is induced near the interface. We further develop an interface exchange-coupling model and place the extracted exchange coupling interaction strengths, from the first-principles calculations, into a resultant generic phase diagram. Our conclusion of interfacial ferromagnetism is confirmed by the presence of a hysteresis loop in field-dependent magnetization data. The emergence of interfacial ferromagnetism should have implications to electronic and transport properties. Published version 2014-08-14T04:26:22Z 2019-12-06T21:40:03Z 2014-08-14T04:26:22Z 2019-12-06T21:40:03Z 2014 2014 Journal Article Zhu, J.-X., Wen, X.-D., Haraldsen, J. T., He, M., Panagopoulos, C., & Chia, E. E. M. (2014). Induced Ferromagnetism at BiFeO3/YBa2Cu3O7 Interfaces. Scientific Reports, 4. 2045-2322 https://hdl.handle.net/10356/104800 http://hdl.handle.net/10220/20269 10.1038/srep05368 24947500 en Scientific reports This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 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-nc-nd/4.0/ application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Physics and Applied Physics
spellingShingle Physics and Applied Physics
Wen, Xiao-Dong
Haraldsen, J. T.
He, Mi
Panagopoulos, C.
Zhu, Jian-Xin
Chia, Elbert E. M.
Induced ferromagnetism at BiFeO3/YBa2Cu3O7 interfaces
description Transition metal oxides (TMOs) exhibit many emergent phenomena ranging from high-temperature superconductivity and giant magnetoresistance to magnetism and ferroelectricity. In addition, when TMOs are interfaced with each other, new functionalities can arise, which are absent in individual components. Here, we report results from first-principles calculations on the magnetism at the BiFeO3/YBa2Cu3O7 interfaces. By comparing the total energy for various magnetic spin configurations inside BiFeO3, we are able to show that a metallic ferromagnetism is induced near the interface. We further develop an interface exchange-coupling model and place the extracted exchange coupling interaction strengths, from the first-principles calculations, into a resultant generic phase diagram. Our conclusion of interfacial ferromagnetism is confirmed by the presence of a hysteresis loop in field-dependent magnetization data. The emergence of interfacial ferromagnetism should have implications to electronic and transport properties.
author2 School of Physical and Mathematical Sciences
author_facet School of Physical and Mathematical Sciences
Wen, Xiao-Dong
Haraldsen, J. T.
He, Mi
Panagopoulos, C.
Zhu, Jian-Xin
Chia, Elbert E. M.
format Article
author Wen, Xiao-Dong
Haraldsen, J. T.
He, Mi
Panagopoulos, C.
Zhu, Jian-Xin
Chia, Elbert E. M.
author_sort Wen, Xiao-Dong
title Induced ferromagnetism at BiFeO3/YBa2Cu3O7 interfaces
title_short Induced ferromagnetism at BiFeO3/YBa2Cu3O7 interfaces
title_full Induced ferromagnetism at BiFeO3/YBa2Cu3O7 interfaces
title_fullStr Induced ferromagnetism at BiFeO3/YBa2Cu3O7 interfaces
title_full_unstemmed Induced ferromagnetism at BiFeO3/YBa2Cu3O7 interfaces
title_sort induced ferromagnetism at bifeo3/yba2cu3o7 interfaces
publishDate 2014
url https://hdl.handle.net/10356/104800
http://hdl.handle.net/10220/20269
_version_ 1759857337076547584