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

Utso Bhattacharya, Sayak Dasgupta and Amit Dutta ()
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Utso Bhattacharya: Indian Institute of Technology
Sayak Dasgupta: The Johns Hopkins University
Amit Dutta: Indian Institute of Technology

The European Physical Journal B: Condensed Matter and Complex Systems, 2016, vol. 89, issue 10, 1-10

Abstract: Abstract 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.

Keywords: Solid; State; and; Materials (search for similar items in EconPapers)
Date: 2016
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DOI: 10.1140/epjb/e2016-70265-5

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