EPR evidence of antiferromagnetic ordering in single‐layer graphene |
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| Authors: | Maria A Augustyniak‐Jabłokow Krzysztof Tadyszak Mariusz Maćkowiak Yurii V Yablokov |
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| Institution: | Institute of Molecular Physics, Polish Academy of Sciences, Smoluchowskiego 17, 60‐179 Poznań, Poland |
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| Abstract: | We report electron paramagnetic resonance (EPR) evidence of the antiferromagnetic ordering in pristine single‐layer graphene. Temperature dependences of the parameters of EPR spectra obtained for vacuum‐processed samples were studied within the temperature range of 4.2–300 K. Our experiment has confirmed recent theoretical predictions that in single‐layer graphene the carrier‐mediated exchange interaction leads to antiferromagnetic coupling. We note some quantitative discrepancies between the theory and experimental findings and discuss their origins. (© 2011 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim) |
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| Keywords: | graphene electron paramagnetic resonance antiferromagnetism |
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