Transition from Anomalous Hall Effect to Topological Hall Effect in Hexagonal Non-Collinear Magnet Mn3Ga

Abstract We report experimental observation of large anomalous Hall effect exhibited in non-collinear triangular antiferromagnet D019-type Mn3Ga with coplanar spin structure at temperatures higher than 100 K. The value of anomalous Hall resistivity increases with increasing temperature, which reache...

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Autores principales:	Z. H. Liu, Y. J. Zhang, G. D. Liu, B. Ding, E. K. Liu, Hasnain Mehdi Jafri, Z. P. Hou, W. H. Wang, X. Q. Ma, G. H. Wu
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/2bcc723654974e58b27c5545384d7c49
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spelling	oai:doaj.org-article:2bcc723654974e58b27c5545384d7c492021-12-02T16:06:17ZTransition from Anomalous Hall Effect to Topological Hall Effect in Hexagonal Non-Collinear Magnet Mn3Ga10.1038/s41598-017-00621-x2045-2322https://doaj.org/article/2bcc723654974e58b27c5545384d7c492017-03-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-00621-xhttps://doaj.org/toc/2045-2322Abstract We report experimental observation of large anomalous Hall effect exhibited in non-collinear triangular antiferromagnet D019-type Mn3Ga with coplanar spin structure at temperatures higher than 100 K. The value of anomalous Hall resistivity increases with increasing temperature, which reaches 1.25 μΩ · cm at a low field of ~300 Oe at room temperature. The corresponding room-temperature anomalous Hall conductivity is about 17 (Ω · cm)−1. Most interestingly, as temperature falls below 100 K, a temperature-independent topological-like Hall effect was observed. The maximum peak value of topological Hall resistivity is about 0.255 μΩ · cm. The appearance of the topological Hall effect is attributed to the change of spin texture as a result of weak structural distortion from hexagonal to orthorhombic symmetry in Mn3Ga. Present study suggests that Mn3Ga shows promising possibility to be antiferromagnetic spintronics or topological Hall effect-based data storage devices.Z. H. LiuY. J. ZhangG. D. LiuB. DingE. K. LiuHasnain Mehdi JafriZ. P. HouW. H. WangX. Q. MaG. H. WuNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-7 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Z. H. Liu Y. J. Zhang G. D. Liu B. Ding E. K. Liu Hasnain Mehdi Jafri Z. P. Hou W. H. Wang X. Q. Ma G. H. Wu Transition from Anomalous Hall Effect to Topological Hall Effect in Hexagonal Non-Collinear Magnet Mn3Ga
description	Abstract We report experimental observation of large anomalous Hall effect exhibited in non-collinear triangular antiferromagnet D019-type Mn3Ga with coplanar spin structure at temperatures higher than 100 K. The value of anomalous Hall resistivity increases with increasing temperature, which reaches 1.25 μΩ · cm at a low field of ~300 Oe at room temperature. The corresponding room-temperature anomalous Hall conductivity is about 17 (Ω · cm)−1. Most interestingly, as temperature falls below 100 K, a temperature-independent topological-like Hall effect was observed. The maximum peak value of topological Hall resistivity is about 0.255 μΩ · cm. The appearance of the topological Hall effect is attributed to the change of spin texture as a result of weak structural distortion from hexagonal to orthorhombic symmetry in Mn3Ga. Present study suggests that Mn3Ga shows promising possibility to be antiferromagnetic spintronics or topological Hall effect-based data storage devices.
format	article
author	Z. H. Liu Y. J. Zhang G. D. Liu B. Ding E. K. Liu Hasnain Mehdi Jafri Z. P. Hou W. H. Wang X. Q. Ma G. H. Wu
author_facet	Z. H. Liu Y. J. Zhang G. D. Liu B. Ding E. K. Liu Hasnain Mehdi Jafri Z. P. Hou W. H. Wang X. Q. Ma G. H. Wu
author_sort	Z. H. Liu
title	Transition from Anomalous Hall Effect to Topological Hall Effect in Hexagonal Non-Collinear Magnet Mn3Ga
title_short	Transition from Anomalous Hall Effect to Topological Hall Effect in Hexagonal Non-Collinear Magnet Mn3Ga
title_full	Transition from Anomalous Hall Effect to Topological Hall Effect in Hexagonal Non-Collinear Magnet Mn3Ga
title_fullStr	Transition from Anomalous Hall Effect to Topological Hall Effect in Hexagonal Non-Collinear Magnet Mn3Ga
title_full_unstemmed	Transition from Anomalous Hall Effect to Topological Hall Effect in Hexagonal Non-Collinear Magnet Mn3Ga
title_sort	transition from anomalous hall effect to topological hall effect in hexagonal non-collinear magnet mn3ga
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/2bcc723654974e58b27c5545384d7c49
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Transition from Anomalous Hall Effect to Topological Hall Effect in Hexagonal Non-Collinear Magnet Mn3Ga

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