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Title: First-principles study of carrier-induced ferromagnetism in bilayer and multilayer zigzag graphene nanoribbons

Abstract

We studied magnetism in bilayer and multilayer zigzag graphene nanoribbons (ZGNRs) through first-principles density functional theory calculations. We found that the magnetic ground state of bilayer ZGNRs is the C-type antiferromagnetic (AFM) state, which is the AFM order between intraplane-edge carbon atoms and ferromagnetic (FM) order between interplane edge carbon atoms. In the cases of infinitely stacked multilayer ZGNRs, i.e., zigzag graphite nanoribbons, the C-type AFM state is also the most stable. By carrier doping, we found that the magnetic ground state changed from the C-AFM state to the FM state and, thus, realized two-dimensional FM surface (edge) states of graphite with a metallic conductivity.

Authors:
 [1];  [2];  [2]
  1. Department of Applied Physics, The University of Tokyo, Hongo, Tokyo 113-8656 (Japan)
  2. Faculty of Mathematics and Physics, Institute of Science and Engineering, Kanazawa University, Kanazawa 920-1192 (Japan)
Publication Date:
OSTI Identifier:
22261584
Resource Type:
Journal Article
Journal Name:
Applied Physics Letters
Additional Journal Information:
Journal Volume: 104; Journal Issue: 14; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0003-6951
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ANTIFERROMAGNETISM; ATOMIC FORCE MICROSCOPY; DENSITY FUNCTIONAL METHOD; FERROMAGNETISM; GRAPHENE; GRAPHITE; GROUND STATES; NANOSTRUCTURES

Citation Formats

Sawada, Keisuke, Ishii, Fumiyuki, Saito, Mineo, and Collaborative Research Center for Frontier Simulation Software for Industrial Science, Institute of Industrial Science, University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8503. First-principles study of carrier-induced ferromagnetism in bilayer and multilayer zigzag graphene nanoribbons. United States: N. p., 2014. Web. doi:10.1063/1.4870766.
Sawada, Keisuke, Ishii, Fumiyuki, Saito, Mineo, & Collaborative Research Center for Frontier Simulation Software for Industrial Science, Institute of Industrial Science, University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8503. First-principles study of carrier-induced ferromagnetism in bilayer and multilayer zigzag graphene nanoribbons. United States. doi:10.1063/1.4870766.
Sawada, Keisuke, Ishii, Fumiyuki, Saito, Mineo, and Collaborative Research Center for Frontier Simulation Software for Industrial Science, Institute of Industrial Science, University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8503. Mon . "First-principles study of carrier-induced ferromagnetism in bilayer and multilayer zigzag graphene nanoribbons". United States. doi:10.1063/1.4870766.
@article{osti_22261584,
title = {First-principles study of carrier-induced ferromagnetism in bilayer and multilayer zigzag graphene nanoribbons},
author = {Sawada, Keisuke and Ishii, Fumiyuki and Saito, Mineo and Collaborative Research Center for Frontier Simulation Software for Industrial Science, Institute of Industrial Science, University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8503},
abstractNote = {We studied magnetism in bilayer and multilayer zigzag graphene nanoribbons (ZGNRs) through first-principles density functional theory calculations. We found that the magnetic ground state of bilayer ZGNRs is the C-type antiferromagnetic (AFM) state, which is the AFM order between intraplane-edge carbon atoms and ferromagnetic (FM) order between interplane edge carbon atoms. In the cases of infinitely stacked multilayer ZGNRs, i.e., zigzag graphite nanoribbons, the C-type AFM state is also the most stable. By carrier doping, we found that the magnetic ground state changed from the C-AFM state to the FM state and, thus, realized two-dimensional FM surface (edge) states of graphite with a metallic conductivity.},
doi = {10.1063/1.4870766},
journal = {Applied Physics Letters},
issn = {0003-6951},
number = 14,
volume = 104,
place = {United States},
year = {2014},
month = {4}
}