Dynamical merging of Dirac points in the periodically driven Kitaev honeycomb model

作者：Bhattacharya Utso; Dasgupta Sayak; Dutta Amit^*

来源：European Physical Journal B, 2016, 89(10): 216.

DOI：10.1140/epjb/e2016-70265-5

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.

• 出版日期2016-10-5