4.6 Article

Magnetoresistance oscillations arising from edge-localized electrons in low-defect graphene antidot-lattices

Journal

APPLIED PHYSICS LETTERS
Volume 100, Issue 2, Pages -

Publisher

AMER INST PHYSICS
DOI: 10.1063/1.3675547

Keywords

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Funding

  1. High-Technology Research Center from MEXT
  2. Kyoto University
  3. AOARD

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The so-called zigzag edge of graphenes has localized and strongly spin-polarized electrons. However, magnetoresistance (MR) behavior associated with the edge electrons has not been reported in graphenes. Here, we measure MR of graphene antidot-lattices, honeycomb-like arrays of hexagonal antidots with a large ensemble of hydrogen-terminated and low-defect antidot edges, prepared by a nonlithographic method using nanoporous alumina templates. We find anomalous MR oscillations arising from localized electron spins existing at the antidot edges. These are promising for realization of spintronic devices. (C) 2012 American Institute of Physics. [doi: 10.1063/1.3675547]

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