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Electronic Conductance of Graphene Nanoribbons in the Presence of Aharonov-Bohm Effect
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Mohammad Mardani   , Hasan Rabani , Mahmoud Borzouei |
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Abstract: (1777 Views) |
| In this paper, we study the electronic conductance of armchair and zigzag graphene nanoribbons in the presence of a local magnetic field by using Green’s function technique at the nearest neighbor tight-binding approach. The results show that the existence of magnetic flux in an armchair nanoribbon causes that the intrinsic gap of the nanoribbon becomes smaller and two anti-resonances are created in the conductance spectrum. Whenever, all rings contain the uniform magnetic flux, a part of resonance region can be converted to a tunneling region which represent a new gap energy. Moreover, in a zigzag nanoribbon which is connected to two simple leads through the trans connection, some Fano resonances can exist at the conductance spectrum in the absence of magnetic flux. |
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| Keywords: : Green’s function, Tight-binding, Graphene nanoribbons, Aharonov-Bohm |
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Full-Text [PDF 510 kb]
(805 Downloads)
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Type of Study: Research |
Subject:
Special
Received: 2017/10/28 | Accepted: 2017/10/28 | Published: 2017/10/28
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