What is it about?
This paper proves a theorem which says that the electrons which live at a particular boundary of a sheet of graphene will align their spins in the same direction so that, in unison, they behave like a magnet.
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Why is it important?
If such a coherent assembly of aligned spins can be manipulated, it can be used to make some very interesting spintronic devices. The existence or non-existence of this state of matter is therefore an important issue for electronic device technology.
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This page is a summary of: Boundary ferromagnetism in zigzag edged graphene, Journal of Mathematical Physics, July 2023, American Institute of Physics,
DOI: 10.1063/5.0135165.
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