| CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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The Unconventional Transport Properties of Dirac Fermions in Graphyne |
| LIN Xin, WANG Hai-Long, PAN Hui, XU Huai-Zhe** |
State Key Laboratory of Software Development Environment, Department of Physics, Beihang University, Beijing 100191
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| Cite this article: |
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LIN Xin, WANG Hai-Long, PAN Hui et al 2013 Chin. Phys. Lett. 30 077305 |
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Abstract A two-band Hamiltonian for β-graphyne is derived by the k?p method. The energy dispersions around the Dirac points are analytically obtained depending on the relative amplitude of the hopping terms t1/t2, and the Dirac cones are elliptical when ?2t1/t2j. This interesting feature is useful for direction-dependent wave filter devices.
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Received: 28 March 2013
Published: 21 November 2013
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