Geodesic
Graphene edge spins: spintronics and magnetism in graphene nanomeshes
Nanosistemy: fizika, himiâ, matematika, Tome 5 (2014) no. 1, pp. 25-38

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We have fabricated low-defect graphene nanomeshes (GNMs) by using a non-lithographic method and observed large-amplitude ferromagnetism even at room temperature, only when pore edges of the GNMs were hydrogen-terminated. The observed correlation between the inter-pore spacing and magnetism and also magnetic force microscope observations suggest that it is attributed to polarzied electron spins localized at the zigzag-type atomic structured pore-edges. The magnetic moment per edge dangling bond ($\sim$0.3 $\mu$B) is also in quantitative agreement with two theories. Moreover, a spin pumping effect is found for fields applied in parallel with the GNM planes in few-layer ferromagnetic GNMs, while a magnetoresistance (MR) hysteresis loop is observed under perpendicular fields. The present ferromagnetic GNMs must also realize rare-element free, invisible, flexible, and ultra-light (wearable) magnets and spintronic devices, which can overcome environmental and material-resource problems.
Keywords: edges, polarized spins, magnetism, spintronics, flat band.
Mots-clés : graphene 
@article{NANO_2014_5_1_a1,
     author = {T. Hashimoto and S. Kamikawa and Yu. Yagi and J. Haruyama and H. Yang and M. Chshiev},
     title = {Graphene edge spins: spintronics and magnetism in graphene nanomeshes},
     journal = {Nanosistemy: fizika, himi\^a, matematika},
     pages = {25--38},
     publisher = {mathdoc},
     volume = {5},
     number = {1},
     year = {2014},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/NANO_2014_5_1_a1/}
}
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T. Hashimoto; S. Kamikawa; Yu. Yagi; J. Haruyama; H. Yang; M. Chshiev. Graphene edge spins: spintronics and magnetism in graphene nanomeshes. Nanosistemy: fizika, himiâ, matematika, Tome 5 (2014) no. 1, pp. 25-38. http://geodesic.mathdoc.fr/item/NANO_2014_5_1_a1/