Room temperature ferromagnetism in partially hydrogenated epitaxial graphene

Lanfei Xie; Xiao Wang; Jiong Lu; Zhenhua Ni; Zhiqiang Luo; Hongying Mao; Rui Wang; Yingying Wang; Han Huang; Dongchen Qi; Rong Liu; Ting Yu; Zexiang Shen; Tom Wu; Haiyang Peng; Barbaros Özyilmaz; Kianping Loh; Andrew T.S. Wee; Ariando; Wei Chen

doi:10.1063/1.3589970

Room temperature ferromagnetism in partially hydrogenated epitaxial graphene

Lanfei Xie^*, Xiao Wang, Jiong Lu, Zhenhua Ni, Zhiqiang Luo, Hongying Mao, Rui Wang, Yingying Wang, Han Huang, Dongchen Qi, Rong Liu, Ting Yu, Zexiang Shen, Tom Wu, Haiyang Peng, Barbaros Özyilmaz, Kianping Loh, Andrew T.S. Wee, Ariando, Wei Chen

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

127 Scopus citations

Abstract

We report room temperature ferromagnetism in partially hydrogenated epitaxial graphene grown on 4HSiC (0001). The presence of ferromagnetism was confirmed by superconducting quantum interference devices measurements. Synchrotron-based near-edge x-ray absorption fine structure and high resolution electron energy loss spectroscopy measurements have been used to investigate the hydrogenation mechanism on the epitaxial graphene and the origin of room temperature ferromagnetism. The partial hydrogenation induces the formation of unpaired electrons in graphene, which together with the remnant delocalized π bonding network, can explain the observed ferromagnetism in partially hydrogenated epitaxial graphene.

Original language	English (US)
Article number	193113
Journal	Applied Physics Letters
Volume	98
Issue number	19
DOIs	https://doi.org/10.1063/1.3589970
State	Published - May 9 2011
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.3589970

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@article{dfc0c1b1ad0d4c9f90abc15fcaf650a3,

title = "Room temperature ferromagnetism in partially hydrogenated epitaxial graphene",

abstract = "We report room temperature ferromagnetism in partially hydrogenated epitaxial graphene grown on 4HSiC (0001). The presence of ferromagnetism was confirmed by superconducting quantum interference devices measurements. Synchrotron-based near-edge x-ray absorption fine structure and high resolution electron energy loss spectroscopy measurements have been used to investigate the hydrogenation mechanism on the epitaxial graphene and the origin of room temperature ferromagnetism. The partial hydrogenation induces the formation of unpaired electrons in graphene, which together with the remnant delocalized π bonding network, can explain the observed ferromagnetism in partially hydrogenated epitaxial graphene.",

author = "Lanfei Xie and Xiao Wang and Jiong Lu and Zhenhua Ni and Zhiqiang Luo and Hongying Mao and Rui Wang and Yingying Wang and Han Huang and Dongchen Qi and Rong Liu and Ting Yu and Zexiang Shen and Tom Wu and Haiyang Peng and Barbaros {\"O}zyilmaz and Kianping Loh and Wee, {Andrew T.S.} and Ariando and Wei Chen",

note = "Funding Information: The authors thank A. H. Castro Neto and V. M. Pereira for their helpful discussions, and acknowledge the support from NRF-CRP Grant “Graphene and Related Materials and Devices,” and “Tailoring Oxide Electronics by Atomic Control,” NUS cross-faculty grant, the ARF Grant Nos. R-143-000-406-112, R-143-000-440-112, and R143-000-452-101.",

year = "2011",

month = may,

day = "9",

doi = "10.1063/1.3589970",

language = "English (US)",

volume = "98",

journal = "Applied Physics Letters",

issn = "0003-6951",

publisher = "AMER INST PHYSICS",

number = "19",

}

TY - JOUR

T1 - Room temperature ferromagnetism in partially hydrogenated epitaxial graphene

AU - Xie, Lanfei

AU - Wang, Xiao

AU - Lu, Jiong

AU - Ni, Zhenhua

AU - Luo, Zhiqiang

AU - Mao, Hongying

AU - Wang, Rui

AU - Wang, Yingying

AU - Huang, Han

AU - Qi, Dongchen

AU - Liu, Rong

AU - Yu, Ting

AU - Shen, Zexiang

AU - Wu, Tom

AU - Peng, Haiyang

AU - Özyilmaz, Barbaros

AU - Loh, Kianping

AU - Wee, Andrew T.S.

AU - Ariando,

AU - Chen, Wei

N1 - Funding Information: The authors thank A. H. Castro Neto and V. M. Pereira for their helpful discussions, and acknowledge the support from NRF-CRP Grant “Graphene and Related Materials and Devices,” and “Tailoring Oxide Electronics by Atomic Control,” NUS cross-faculty grant, the ARF Grant Nos. R-143-000-406-112, R-143-000-440-112, and R143-000-452-101.

PY - 2011/5/9

Y1 - 2011/5/9

N2 - We report room temperature ferromagnetism in partially hydrogenated epitaxial graphene grown on 4HSiC (0001). The presence of ferromagnetism was confirmed by superconducting quantum interference devices measurements. Synchrotron-based near-edge x-ray absorption fine structure and high resolution electron energy loss spectroscopy measurements have been used to investigate the hydrogenation mechanism on the epitaxial graphene and the origin of room temperature ferromagnetism. The partial hydrogenation induces the formation of unpaired electrons in graphene, which together with the remnant delocalized π bonding network, can explain the observed ferromagnetism in partially hydrogenated epitaxial graphene.

AB - We report room temperature ferromagnetism in partially hydrogenated epitaxial graphene grown on 4HSiC (0001). The presence of ferromagnetism was confirmed by superconducting quantum interference devices measurements. Synchrotron-based near-edge x-ray absorption fine structure and high resolution electron energy loss spectroscopy measurements have been used to investigate the hydrogenation mechanism on the epitaxial graphene and the origin of room temperature ferromagnetism. The partial hydrogenation induces the formation of unpaired electrons in graphene, which together with the remnant delocalized π bonding network, can explain the observed ferromagnetism in partially hydrogenated epitaxial graphene.

UR - http://www.scopus.com/inward/record.url?scp=79959669484&partnerID=8YFLogxK

U2 - 10.1063/1.3589970

DO - 10.1063/1.3589970

M3 - Article

AN - SCOPUS:79959669484

SN - 0003-6951

VL - 98

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 19

M1 - 193113

ER -

Room temperature ferromagnetism in partially hydrogenated epitaxial graphene

Abstract

ASJC Scopus subject areas

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