Magnetism of graphene quantum dots

Condensed matter physics: intrinsic magnetism emerges in graphene quantum dots A local magetic moment emerges in nanoscale high purity graphene quantum dots, probably resulting from edge passivation. A team led by Nujiang Tang at Nanjing University synthesized high purity graphene quantum dots with...

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Autores principales:	Yuanyuan Sun, Yongping Zheng, Hongzhe Pan, Jie Chen, Weili Zhang, Lin Fu, Kaiyu Zhang, Nujiang Tang, Youwei Du
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Materials of engineering and construction. Mechanics of materials TA401-492 Atomic physics. Constitution and properties of matter QC170-197
Acceso en línea:	https://doaj.org/article/e09546c5600745ebad6c823a8218c888
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id	oai:doaj.org-article:e09546c5600745ebad6c823a8218c888
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spelling	oai:doaj.org-article:e09546c5600745ebad6c823a8218c8882021-12-02T14:18:31ZMagnetism of graphene quantum dots10.1038/s41535-017-0010-22397-4648https://doaj.org/article/e09546c5600745ebad6c823a8218c8882017-01-01T00:00:00Zhttps://doi.org/10.1038/s41535-017-0010-2https://doaj.org/toc/2397-4648Condensed matter physics: intrinsic magnetism emerges in graphene quantum dots A local magetic moment emerges in nanoscale high purity graphene quantum dots, probably resulting from edge passivation. A team led by Nujiang Tang at Nanjing University synthesized high purity graphene quantum dots with an average diameter of about 2.04 nm and average height of about 0.52 nm. They found that a local moment of 1.2 µB were carried by spin polarized edge state appearing in a small number of quantum dots at 2K, with the likely origin from hydroxyl passivation on carbon. The majority dots are nonmagnetic due to the suppression of edge magnetism by defects or reconstruction at the edge. These results may provide insights into the intrinsic magnetism of graphene quantum dots and pave a way towards edge magnetism by various chemical passivation.Yuanyuan SunYongping ZhengHongzhe PanJie ChenWeili ZhangLin FuKaiyu ZhangNujiang TangYouwei DuNature PortfolioarticleMaterials of engineering and construction. Mechanics of materialsTA401-492Atomic physics. Constitution and properties of matterQC170-197ENnpj Quantum Materials, Vol 2, Iss 1, Pp 1-7 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Materials of engineering and construction. Mechanics of materials TA401-492 Atomic physics. Constitution and properties of matter QC170-197
spellingShingle	Materials of engineering and construction. Mechanics of materials TA401-492 Atomic physics. Constitution and properties of matter QC170-197 Yuanyuan Sun Yongping Zheng Hongzhe Pan Jie Chen Weili Zhang Lin Fu Kaiyu Zhang Nujiang Tang Youwei Du Magnetism of graphene quantum dots
description	Condensed matter physics: intrinsic magnetism emerges in graphene quantum dots A local magetic moment emerges in nanoscale high purity graphene quantum dots, probably resulting from edge passivation. A team led by Nujiang Tang at Nanjing University synthesized high purity graphene quantum dots with an average diameter of about 2.04 nm and average height of about 0.52 nm. They found that a local moment of 1.2 µB were carried by spin polarized edge state appearing in a small number of quantum dots at 2K, with the likely origin from hydroxyl passivation on carbon. The majority dots are nonmagnetic due to the suppression of edge magnetism by defects or reconstruction at the edge. These results may provide insights into the intrinsic magnetism of graphene quantum dots and pave a way towards edge magnetism by various chemical passivation.
format	article
author	Yuanyuan Sun Yongping Zheng Hongzhe Pan Jie Chen Weili Zhang Lin Fu Kaiyu Zhang Nujiang Tang Youwei Du
author_facet	Yuanyuan Sun Yongping Zheng Hongzhe Pan Jie Chen Weili Zhang Lin Fu Kaiyu Zhang Nujiang Tang Youwei Du
author_sort	Yuanyuan Sun
title	Magnetism of graphene quantum dots
title_short	Magnetism of graphene quantum dots
title_full	Magnetism of graphene quantum dots
title_fullStr	Magnetism of graphene quantum dots
title_full_unstemmed	Magnetism of graphene quantum dots
title_sort	magnetism of graphene quantum dots
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/e09546c5600745ebad6c823a8218c888
work_keys_str_mv	AT yuanyuansun magnetismofgraphenequantumdots AT yongpingzheng magnetismofgraphenequantumdots AT hongzhepan magnetismofgraphenequantumdots AT jiechen magnetismofgraphenequantumdots AT weilizhang magnetismofgraphenequantumdots AT linfu magnetismofgraphenequantumdots AT kaiyuzhang magnetismofgraphenequantumdots AT nujiangtang magnetismofgraphenequantumdots AT youweidu magnetismofgraphenequantumdots
_version_	1718391638539108352

Magnetism of graphene quantum dots

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