Electric-field control of magnetism in graphene quantum dots: Ab initio calculations.
Electric-field control of magnetism in graphene quantum dots: Ab initio calculations.
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DOI:
10.1103/physrevb.82.201411
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发表时间:
2010-11-23
期刊:
影响因子:
--
通讯作者:
Kaxiras E
中科院分区:
文献类型:
--
作者:
Agapito LA;Kioussis N;Kaxiras E
Employing ab initio calculations we predict that the magnetic states of hydrogenated diamond-shaped zigzag graphene quantum dots (GQDs), each exhibiting unique electronic structure, can be selectively tuned with gate voltage, through Stark or hybridization electric-field modulation of the spatial distribution and energy of the spin-polarized molecular orbitals, leading to transitions between these states. Electrical read-out of the GQD magnetic state can be accomplished by exploiting the distinctive electrical properties of the various magnetic configurations.
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