Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/7635
Title: Effects of random atomic disorder on the magnetic stability of graphene nanoribbons with zigzag edges
Authors: Çakmak, Korhan Ertan
Altıntaş, Abdulmenaf
Güçlü, Alev Devrim
Keywords: Graphene
Nanoribbons
Edge states
Hubbard model
Issue Date: Sep-2018
Publisher: American Physical Society
Source: Çakmak, K. E., Altıntaş, A., and Güçlü, A. D. (2018). Effects of random atomic disorder on the magnetic stability of graphene nanoribbons with zigzag edges. Physical Review B, 98(11). doi:10.1103/PhysRevB.98.115428
Abstract: We investigate the effects of randomly distributed atomic defects on the magnetic properties of graphene nanoribbons with zigzag edges using an extended mean-field Hubbard model. For a balanced defect distribution among the sublattices of the honeycomb lattice in the bulk region of the ribbon, the ground-state antiferromagnetism of the edge states remains unaffected. By analyzing the excitation spectrum, we show that while the antiferromagnetic ground state is susceptible to single spin-flip excitations from edge states to magnetic defect states at low defect concentrations, its overall stability is enhanced with respect to the ferromagnetic phase.
URI: https://doi.org/10.1103/PhysRevB.98.115428
https://hdl.handle.net/11147/7635
ISSN: 2469-9950
2469-9969
Appears in Collections:Physics / Fizik
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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