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Super Bloch oscillations in the Peyrard-Bishop-Holstein model | C. Herrero-Gómez
; E. Díaz
; F. Domínguez-Adame
; | Date: |
20 Oct 2011 | Abstract: | Recently, polarons in the Peyrard-Bishop-Holstein model under DC electric
fields were established to perform Bloch oscillations, provided the
charge-lattice coupling is not large. In this work, we study this model when
the charge is subjected to an applied field with both DC and AC components.
Similarly to what happens in the rigid lattice, we find that the carrier
undergoes a directed motion or coherent oscillations when the AC field is
resonant or detuned with respect to the Bloch frequency, respectively. The
electric density current and its Fourier spectrum are also studied to reveal
the frequencies involved in the polaron dynamics. | Source: | arXiv, 1110.4470 | Services: | Forum | Review | PDF | Favorites |
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