skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Magnetic States of Zigzag Graphene Nanoribbons from First Principles

Abstract

The nature of the magnetic states of zigzag graphene nanoribbons (ZGNRs) was explored on the basis of density functional calculations to understand why they are apparently nonmagnetic. Our study shows that the magnetic moments of ZGNRs are destroyed by p-type or n-type carrier doping with {approx}10{sup 13} carriers/cm{sup 2} per ribbon, which is close to the amount of unpaired spins that ZGNRs are expected to have. Thus the extrinsic sources of carrier doping should be removed to observe the expected magnetic character of ZGNRs.

Authors:
; ; ; ; ;
Publication Date:
Research Org.:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1021219
DOE Contract Number:  
AC36-08GO28308
Resource Type:
Journal Article
Journal Name:
Applied Physics Letters
Additional Journal Information:
Journal Volume: 94; Journal Issue: 22, 2009; Related Information: Article No. 223105; Journal ID: ISSN 0003-6951
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY; FUNCTIONALS; MAGNETIC MOMENTS; PHYSICS; Basic Sciences

Citation Formats

Wu, F, Kan, E, Xiang, H, Wei, S H, Whangbo, M H, and Yang, J. Magnetic States of Zigzag Graphene Nanoribbons from First Principles. United States: N. p., 2009. Web. doi:10.1063/1.3147854.
Wu, F, Kan, E, Xiang, H, Wei, S H, Whangbo, M H, & Yang, J. Magnetic States of Zigzag Graphene Nanoribbons from First Principles. United States. doi:10.1063/1.3147854.
Wu, F, Kan, E, Xiang, H, Wei, S H, Whangbo, M H, and Yang, J. Thu . "Magnetic States of Zigzag Graphene Nanoribbons from First Principles". United States. doi:10.1063/1.3147854.
@article{osti_1021219,
title = {Magnetic States of Zigzag Graphene Nanoribbons from First Principles},
author = {Wu, F and Kan, E and Xiang, H and Wei, S H and Whangbo, M H and Yang, J},
abstractNote = {The nature of the magnetic states of zigzag graphene nanoribbons (ZGNRs) was explored on the basis of density functional calculations to understand why they are apparently nonmagnetic. Our study shows that the magnetic moments of ZGNRs are destroyed by p-type or n-type carrier doping with {approx}10{sup 13} carriers/cm{sup 2} per ribbon, which is close to the amount of unpaired spins that ZGNRs are expected to have. Thus the extrinsic sources of carrier doping should be removed to observe the expected magnetic character of ZGNRs.},
doi = {10.1063/1.3147854},
journal = {Applied Physics Letters},
issn = {0003-6951},
number = 22, 2009,
volume = 94,
place = {United States},
year = {2009},
month = {1}
}