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- Title
Spin transport properties of a carbon nanotube/zigzag graphene nanoribbon junction: a first principles investigation.
- Authors
Yu, Haiping; Zheng, Jiming; Guo, Ping; Zhang, Zhiyong
- Abstract
A carbon nanotube (CNT)/zigzag graphene nanoribbons (ZGNRs) junctions has been proposed and investigated by first-principles calculations. The results show that large spin polarization of currents would be achieved when only one edge of ZGNR is coupled to the other lead. By virtue of spatial separation of edge state in two spin channel, one of those channels is opened at certain energy range and gives rise to spin-polarized currents under a low bias. This feature is stable whenever the ZGNR lead is under the antiferromagnetic ground states or is under the ferromagnetic states. Our findings indicate that this approach is simple and efficient for spintronics design.
- Subjects
CARBON nanotubes; GRAPHENE; SPIN polarization; ENERGY levels (Quantum mechanics); ANTIFERROMAGNETISM; GROUND state (Quantum mechanics); NANORIBBONS
- Publication
Applied Physics A: Materials Science & Processing, 2014, Vol 117, Issue 4, p2175
- ISSN
0947-8396
- Publication type
Article
- DOI
10.1007/s00339-014-8641-7