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 journalArticlepeer-review

114 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 languageEnglish (US)
Article number193113
JournalApplied Physics Letters
Volume98
Issue number19
DOIs
StatePublished - May 9 2011

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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