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Graphene magnet realized by hydrogenated graphene nanopore arrays.
- Source :
- Applied Physics Letters; 10/31/2011, Vol. 99 Issue 18, p183111, 3p, 1 Color Photograph, 1 Diagram, 1 Graph
- Publication Year :
- 2011
-
Abstract
- The so-called zigzag edge of graphenes theoretically has localized electrons due to the presence of flat energy bands near the Fermi level. The localized electron spins are strongly polarized, resulting in ferromagnetism. We fabricate graphenes with honeycomb-like arrays of hydrogen-terminated and low-defect hexagonal nanopores by a nonlithographic method using nanoporous alumina templates. We report large-magnitude room-temperature ferromagnetism caused by electron spins localizing at the zigzag nanopore edges. This promises to be a realization of rare-element free, controllable, transparent, flexible, and mono-atomic layer magnets and novel spintronic devices. [ABSTRACT FROM AUTHOR]
- Subjects :
- GRAPHENE
MAGNETS
ELECTRONS
FERROMAGNETISM
ALUMINUM oxide
Subjects
Details
- Language :
- English
- ISSN :
- 00036951
- Volume :
- 99
- Issue :
- 18
- Database :
- Complementary Index
- Journal :
- Applied Physics Letters
- Publication Type :
- Academic Journal
- Accession number :
- 67044180
- Full Text :
- https://doi.org/10.1063/1.3653286