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Tuning magnetic properties of graphene nanoribbons with topological line defects: From antiferromagnetic to ferromagnetic  
Yazarlar
Doç. Dr. Mustafa KAN
Kırşehir Ahi Evran Üniversitesi
Jian Zhou
Qiang Sun
Qian Wang
Yoshiyuki Kawazoe
Puru Jena
Özet
Zigzag-edged graphene nanoribbons are antiferromagnetic in cross-edge coupling and unsuitable for spintronics applications. Two new strategies of tuning antiferromagnetism (AFM) to ferromagnetism (FM) in graphene nanoribbons are introduced through topological line defects composed of pentagonal and octagonal rings, and their ability to induce magnetic transition is probed by using density functional theory. The resulting exchange energy is found to be large enough for ferromagnetism to be observed at room temperature. Both strategies are experimentally feasible, and the results suggest that defect engineering may provide a novel path to manipulate the magnetic properties of graphene nanoribbons.
Anahtar Kelimeler
Makale Türü Özgün Makale
Makale Alt Türü SSCI, AHCI, SCI, SCI-Exp dergilerinde yayımlanan tam makale
Dergi Adı PHYSICAL REVIEW B
Dergi ISSN 1098-0121
Dergi Grubu Q4
Makale Dili İngilizce
Basım Tarihi 40-2012
Cilt No 85
Sayı 15
Doi Numarası 10.1103/PhysRevB.85.155450