標題: | The Effects of the Modulated Magnetic Fields on Electronic Structures of Graphene Nanoribbons |
作者: | Wu, J. Y. Chiu, Y. H. Lien, J. Y. Lin, M. F. 物理研究所 Institute of Physics |
關鍵字: | Nanographene Ribbon;A Modulated Magnetic Field |
公開日期: | 1-May-2009 |
摘要: | The low-energy magnetoelectronic structures of nanographene ribbons under a modulated magnetic field are investigated by the Peierls tight-binding model. They are dominated by the field strength, period, phase, the ribbon width, and edge structure. The modulated magnetic field could add state degeneracy, modify energy dispersions, alter subband spacings, affect carrier-density distributions, create additional band-edge states, and cause semiconductor-metal transitions. The main features of energy bands are directly reflected in density of states, such as the position, height, structure, and number of the prominent peaks. These results immensely differ from those in a uniform magnetic field. Significant differences between a 1D graphene ribbon and a 2D electron gas are also found. |
URI: | http://dx.doi.org/10.1166/jnn.2009.042 http://hdl.handle.net/11536/7250 |
ISSN: | 1533-4880 |
DOI: | 10.1166/jnn.2009.042 |
期刊: | JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY |
Volume: | 9 |
Issue: | 5 |
起始頁: | 3193 |
結束頁: | 3200 |
Appears in Collections: | Articles |