Suppression of spin polarization in graphene nanoribbon by edge defects and impurities

Update Item Information
Publication Type Journal Article
School or College College of Engineering
Department Materials Science & Engineering
Creator Liu, Feng
Other Author Huang, Bing; Wu, Jian; Gu, Bing-Lin; Duan, Wenhui
Title Suppression of spin polarization in graphene nanoribbon by edge defects and impurities
Date 2008-04
Description We investigate the effect of edge defects (vacancies) and impurities (substitutional dopants) on the robustness of spin polarization in graphene nanoribbons (GNRs) with zigzag edges by using density-functional-theory calculations. The stability of the spin state and its magnetic moments is found to continuously decrease with increasing the concentration of the defects or impurities. The system generally becomes nonmagnetic at the concentration of one edge defect (impurity) per ~10 Å. The spin suppression is shown to be caused by the reduction and removal of edge states at the Fermi energy. Our analysis implies an important criterion on the GNR samples for spintronics applications.
Type Text
Publisher American Physical Society
Journal Title Physical Review B
Volume 77
Issue 15
DOI 10.1103/PhysRevB.77.153411
citatation_issn 1098-0121
Subject Edge defects; Vacancy; Spin-polarization; Graphene nanoribbon; GNR
Subject LCSH Nuclear spin; Nanostructured materials
Language eng
Bibliographic Citation Huang, B., Liu, F., Wu, J., Gu, B.-L., & Duan, W. (2008). Suppression of spin polarization in graphene nanoribbon by edge defects and impurities. Physical Review B, 77(15), 153411.
Rights Management (c) American Physical Society http://dx.doi.org/10.1103/PhysRevB.77.153411
Format Medium application/pdf
Format Extent 796,414 bytes
Identifier ir-main,12118
ARK ark:/87278/s605806z
Setname ir_uspace
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Reference URL https://collections.lib.utah.edu/ark:/87278/s605806z