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Inducing ferromagnetism and Kondo effect in platinum by paramagnetic ionic gating
Electrically controllable magnetism, which requires the field-effect manipulation of both charge and spin degrees of freedom, has attracted growing interest since the emergence of spintronics. We report the reversible electrical switching of ferromagnetic (FM) states in platinum (Pt) thin films by i...
Autores principales: | , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American Association for the Advancement of Science
2018
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5938224/ https://www.ncbi.nlm.nih.gov/pubmed/29740612 http://dx.doi.org/10.1126/sciadv.aar2030 |
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author | Liang, Lei Chen, Qihong Lu, Jianming Talsma, Wytse Shan, Juan Blake, Graeme R. Palstra, Thomas T. M. Ye, Jianting |
author_facet | Liang, Lei Chen, Qihong Lu, Jianming Talsma, Wytse Shan, Juan Blake, Graeme R. Palstra, Thomas T. M. Ye, Jianting |
author_sort | Liang, Lei |
collection | PubMed |
description | Electrically controllable magnetism, which requires the field-effect manipulation of both charge and spin degrees of freedom, has attracted growing interest since the emergence of spintronics. We report the reversible electrical switching of ferromagnetic (FM) states in platinum (Pt) thin films by introducing paramagnetic ionic liquid (PIL) as the gating media. The paramagnetic ionic gating controls the movement of ions with magnetic moments, which induces itinerant ferromagnetism on the surface of Pt films, with large coercivity and perpendicular anisotropy mimicking the ideal two-dimensional Ising-type FM state. The electrical transport of the induced FM state shows Kondo effect at low temperature, suggesting spatially separated coexistence of Kondo scattering beneath the FM interface. The tunable FM state indicates that paramagnetic ionic gating could serve as a versatile method to induce rich transport phenomena combining field effect and magnetism at PIL-gated interfaces. |
format | Online Article Text |
id | pubmed-5938224 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | American Association for the Advancement of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-59382242018-05-08 Inducing ferromagnetism and Kondo effect in platinum by paramagnetic ionic gating Liang, Lei Chen, Qihong Lu, Jianming Talsma, Wytse Shan, Juan Blake, Graeme R. Palstra, Thomas T. M. Ye, Jianting Sci Adv Research Articles Electrically controllable magnetism, which requires the field-effect manipulation of both charge and spin degrees of freedom, has attracted growing interest since the emergence of spintronics. We report the reversible electrical switching of ferromagnetic (FM) states in platinum (Pt) thin films by introducing paramagnetic ionic liquid (PIL) as the gating media. The paramagnetic ionic gating controls the movement of ions with magnetic moments, which induces itinerant ferromagnetism on the surface of Pt films, with large coercivity and perpendicular anisotropy mimicking the ideal two-dimensional Ising-type FM state. The electrical transport of the induced FM state shows Kondo effect at low temperature, suggesting spatially separated coexistence of Kondo scattering beneath the FM interface. The tunable FM state indicates that paramagnetic ionic gating could serve as a versatile method to induce rich transport phenomena combining field effect and magnetism at PIL-gated interfaces. American Association for the Advancement of Science 2018-04-06 /pmc/articles/PMC5938224/ /pubmed/29740612 http://dx.doi.org/10.1126/sciadv.aar2030 Text en Copyright © 2018 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC). http://creativecommons.org/licenses/by-nc/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial license (http://creativecommons.org/licenses/by-nc/4.0/) , which permits use, distribution, and reproduction in any medium, so long as the resultant use is not for commercial advantage and provided the original work is properly cited. |
spellingShingle | Research Articles Liang, Lei Chen, Qihong Lu, Jianming Talsma, Wytse Shan, Juan Blake, Graeme R. Palstra, Thomas T. M. Ye, Jianting Inducing ferromagnetism and Kondo effect in platinum by paramagnetic ionic gating |
title | Inducing ferromagnetism and Kondo effect in platinum by paramagnetic ionic gating |
title_full | Inducing ferromagnetism and Kondo effect in platinum by paramagnetic ionic gating |
title_fullStr | Inducing ferromagnetism and Kondo effect in platinum by paramagnetic ionic gating |
title_full_unstemmed | Inducing ferromagnetism and Kondo effect in platinum by paramagnetic ionic gating |
title_short | Inducing ferromagnetism and Kondo effect in platinum by paramagnetic ionic gating |
title_sort | inducing ferromagnetism and kondo effect in platinum by paramagnetic ionic gating |
topic | Research Articles |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5938224/ https://www.ncbi.nlm.nih.gov/pubmed/29740612 http://dx.doi.org/10.1126/sciadv.aar2030 |
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