Rabi Regime of Current Rectification in Solids.

  title={Rabi Regime of Current Rectification in Solids.},
  author={Oles Matsyshyn and Francesco Piazza and Roderich Moessner and Inti Sodemann},
  journal={Physical review letters},
  volume={127 12},
We investigate rectified currents in response to oscillating electric fields in systems lacking inversion and time-reversal symmetries. These currents, in second-order perturbation theory, are inversely proportional to the relaxation rate, and, therefore, naively diverge in the ideal clean limit. Employing a combination of the nonequilibrium Green function technique and Floquet theory, we show that this is an artifact of perturbation theory, and that there is a well-defined periodic steady… 

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