Yayınlanmış 1 Ocak 2016
| Sürüm v1
Dergi makalesi
Açık
Magnetic phases of graphene nanoribbons under potential fluctuations
Oluşturanlar
- 1. IZTECH, Izmir Inst Technol, Dept Phys, TR-35430 Izmir, Turkey
Açıklama
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.
Dosyalar
bib-5129842b-713b-4dd4-ab0c-db427008bcaf.txt
Dosyalar
(141 Bytes)
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