https://doi.org/10.1140/epjb/e2016-70265-5
Regular Article
Dynamical merging of Dirac points in the periodically driven Kitaev honeycomb model
1 Department of Physics, Indian Institute of Technology, 208016 Kanpur, India
2 Department of Physics and Astronomy, The Johns Hopkins University, 3400 N. Charles Street, Baltimore MD 21218, USA
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e-mail: dutta@iitk.ac.in
Received: 2 May 2016
Received in final form: 27 July 2016
Published online: 5 October 2016
We study the effect of a half wave rectified sinusoidal electromagnetic (EM) wave on the Kitaev honeycomb model with an additional magneto-electric coupling term arising due to induced polarization of the bonds. Within the framework of Floquet analysis, we show that merging of a pair of Dirac points in the gapless region of the Kitaev model leading to a semi-Dirac spectrum is indeed possible by externally varying the amplitude and the phase of the EM field.
Key words: Solid State and Materials
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2016
