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Abstracts
In this paper energy bands and Berry curvature of graphene was studied. Desired Hamiltonian regarding the next-nearest neighbors was obtained by tight-binding model. By using the second quantization approach, the transformation matrix is calculated and the Hamiltonian of system is diagonalized. With this Hamiltonian, the band structure and wave function can be calculated. By using calculated wave function the Berry connection and Berry curvature of our system are calculated. Our results are exactly consistent with previous methods and also the Berry curvature throughout the Brillouin zone get zero.
Discipline
- 73.22.Pr: Electronic structure of graphene
- 81.05.ue: Graphene(for structure of graphene, see 61.48.Gh; for phonons in graphene, see 63.22.Rc; for thermal properties, see 65.80.Ck; for graphene films, see 68.65.Pq; for electronic transport, see 72.80.Vp; for electronic structure, see 73.22.Pr; for optical properties, see 78.67.Wj)
Journal
Year
Volume
Issue
Pages
180-183
Physical description
Dates
published
2012-07
received
2011-11-01
(unknown)
2012-01-11
Contributors
author
- Department of Physics, Faculty of Science, P.O. Box 16575-347, I.H.U Tehran, Iran
author
- Department of Physics, Faculty of Science, P.O. Box 16575-347, I.H.U Tehran, Iran
author
- Department of Physics, Faculty of Science, P.O. Box 16575-347, I.H.U Tehran, Iran
author
- Department of Physics, Faculty of Science, P.O. Box 16575-347, I.H.U Tehran, Iran
References
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Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv122n1p36kz