Journal
PHYSICS LETTERS A
Volume 375, Issue 37, Pages 3319-3324Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.physleta.2011.07.029
Keywords
Graphene nanoribbons; V-shaped notch; First-principles; Electronic transport properties
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Funding
- National Natural Science Foundation of China [60871065]
- National Basic Research Program of China [2011CB606405]
- Specialized Research Fund for the Doctoral Program of Higher Education of China [200805320011]
- Aid Program for Science and Technology Innovative Research Team in Higher Educational Institutions of Hunan Province
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Using nonequilibrium Green's functions in combination with the density functional theory, the spin-dependent electronic transport properties on V-shaped notched zigzag-edged graphene nanoribbons junctions have been calculated. The results show that the electronic transport properties are strongly depending on the type of notch and the symmetry of ribbon. The spin-filter phenomenon and negative differential resistance behaviors can be observed. A physical analysis of these results is given. (C) 2011 Elsevier B.V. All rights reserved.
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