Physics / Fizik

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Author: search.filters.author.Özdemir, Hakan UlaşLanguage: search.filters.language.en

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  • Article
    Citation - WoS: 16
    Citation - Scopus: 16
    Magnetic Phases of Graphene Nanoribbons Under Potential Fluctuations
    (American Physical Society, 2016) Özdemir, Hakan Ulaş; Altıntaş, Abdulmenaf; Güçlü, Alev Devrim; 04.05. Department of Pyhsics; 04. Faculty of Science; 01. Izmir Institute of Technology
    We investigate the effects of long-range potential fluctuations and electron-electron interactions on the electronic and magnetic properties of graphene nanoribbons with zigzag edges using an extended mean-field Hubbard model. We show that electron-electron interactions make the edge states robust against potential fluctuations. When the disorder is strong enough, the presence of electron-hole puddles induces a magnetic phase transition from antiferromagnetically coupled edge states to ferromagnetic coupling, in agreement with recent experimental results.