Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/7644
Title: Defect induced Anderson localization and magnetization in graphene quantum dots
Authors: Altıntaş, Abdulmenaf
Güçlü, Alev Devrim
Keywords: Graphene
Electronic structure
Localization
Magnetization
Nanostructures
Honeycomb lattices
Issue Date: Oct-2018
Publisher: Elsevier
Source: Altıntaş, A., and Güçlü, A. D. (2018). Defect induced Anderson localization and magnetization in graphene quantum dots. Solid State Communications, 281, 44-48. doi:10.1016/j.ssc.2018.06.015
Abstract: We theoretically investigate the effects of atomic defect related short-range disorders and electron-electron interactions on Anderson type localization and the magnetic properties of hexagonal armchair graphene quantum dots using an extended mean-field Hubbard model and wave packet dynamics for the calculation of localization lengths. We observe that randomly distributed defects with concentrations between 1 and 5% of the total number of atoms leads to localization alongside magnetic puddle-like structures. Although the localization lengths are not affected by interactions, staggered magnetism and localization are found to be enhanced if the defects are distributed unevenly between the sublattices of the honeycomb lattice.
URI: https://doi.org/10.1016/j.ssc.2018.06.015
https://hdl.handle.net/11147/7644
ISSN: 0038-1098
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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