Pseudomagnetic Moment in Graphene in Time-Dependent Electric Field |
H. Goudarzia, M.R. Setareb and S. Zarrina
aDepartment of Physics, Faculty of Science, Urmia University, P.O. Box 165, Urmia, Iran bDepartment of Physics, Payame Noor University, Bijar, Iran |
Received: May 10, 2010; in final form: November 24, 2010 |
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We study the dynamics of graphene ring in the presence of time-dependent electric field, where the Dirac particles in graphene ring interact with external electromagnetic fields. Using the Dirac Hamiltonian in electromagnetic field, we obtain the pseudo-magnetic moment of the Dirac particles around a graphene ring. It is shown that the appeared pseudo-magnetic moment term essentially can be in control by time-dependent electric field, and also it depends on the energy gap of graphene. It seems that one can construct a logic system in graphene and also in semiconductors by the pseudo-magnetic moment term. |
DOI: 10.12693/APhysPolA.119.424 PACS numbers: 73.21.-b, 73.22.Pr, 72.80.Vp |