| Issue |
EPL
Volume 111, Number 1, July 2015
|
|
|---|---|---|
| Article Number | 17006 | |
| Number of page(s) | 5 | |
| Section | Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties | |
| DOI | https://doi.org/10.1209/0295-5075/111/17006 | |
| Published online | 29 July 2015 | |
Fantastic parity effects on the electronic and magnetic properties of zigzag graphene nanoribbons with side-attached trans-polyacetylene
1 School of Physics and Electronics Science, Hunan University - Changsha 410082, China
2 School of Optoelectronic Information, University of Electronic Science and Technology of China Chengdu, Sichuan, 610054, China
(a) liangxu@hnu.edu.cn
(b) llwang@hnu.edu.cn
Received: 10 May 2015
Accepted: 30 June 2015
Using first-principles calculations, we investigate the electronic and magnetic properties of zigzag graphene nanoribbons (ZGNRs) with side-attached trans-polyacetylene (CnHn+1). The band gap is strongly dependent on the number n of C atoms in the polyacetylene chain: the gap of the system with even n is much bigger than that with odd n+1, whereas the parity dependence of n is gradually weakened with an increasing n. Moreover, the magnetic moment oscillation between 1 and 
, with n odd and even, also reveals a parity effect due to the electron transfer from the ZGNRs to polyacetylene chain with odd n.
PACS: 73.20.At – Surface states, band structure, electron density of states / 75.70.Ak – Magnetic properties of monolayers and thin films / 73.22.Pr – Electronic structure of graphene
© EPLA, 2015
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