Dynamical merging of Dirac points in the periodically driven Kitaev honeycomb model
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- Bhattacharya, U., Dasgupta, S. & Dutta, A. Eur. Phys. J. B (2016) 89: 216. doi:10.1140/epjb/e2016-70265-5
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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.