Journal
COMPUTATIONAL MATERIALS SCIENCE
Volume 50, Issue 10, Pages 2886-2890Publisher
ELSEVIER
DOI: 10.1016/j.commatsci.2011.05.004
Keywords
Graphene nanoribbon; Spin-filter efficiency; Magnetoresistance; Quantum transport calculation
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Funding
- NSFC [10774003, 10474123, 10434010, 90626223, 20731162012]
- National 973 Projects [2007CB936200]
- Fundamental Research Funds for the Central Universities
- University of MOE
- National Foundation for Fostering Talents of Basic Science of China [J0630311]
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Sign-changeable spin-filter efficiency is predicted in both the ferromagnetic and antiferromagnetic configurations of a zigzag graphene nanoribbon bridging two half-planar graphene electrodes from ab initio quantum transport calculations. By changing edge spin-polarization configuration, we obtain giant room-temperature magnetoresistance, which is one order of magnitude larger than the maximum experimental results. (C) 2011 Elsevier B.V. All rights reserved.
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