Journal
EUROPEAN PHYSICAL JOURNAL-SPECIAL TOPICS
Volume 148, Issue -, Pages 117-125Publisher
SPRINGER HEIDELBERG
DOI: 10.1140/epjst/e2007-00231-7
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We discuss the excitation spectrum, electronic susceptibilities, and possible electronic instabilities in graphene and graphene stacks. The corrections due interactions of Landau levels in graphene are analyzed. At low dopings, and for sufficiently low couplings, single layer graphene is stable against ferromagnetism. On the other hand, a graphene bilayer, and infinite graphite, are unstable towards ferromagnetism and antiferromagnetism.
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