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Bloch-like oscillations in the Peyrard-Bishop-Holstein model

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Díaz García, Elena and Lima, R. P. A. and Domínguez-Adame Acosta, Francisco (2008) Bloch-like oscillations in the Peyrard-Bishop-Holstein model. Physical Review B, 78 (13). ISSN 1098-0121

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Official URL: http://dx.doi.org/10.1103/PhysRevB.78.134303


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Abstract

The Peyrard-Bishop-Holstein model has been previously introduced as an appropriate framework for the description of polaronic effects for charge migration in DNA. We study numerically the Peyrard-Bishop-Holstein model when the charge carrier is also subjected to an applied uniform electric field. We find that the polaron undergoes coherent oscillations when the electric field is applied along the stacking direction. The frequency of the oscillations is the same as in the rigid lattice (Bloch frequency) provided that the carrier-lattice coupling is not large. Increasing the coupling the single peak of the Fourier spectrum splits into side peaks around the Bloch frequency.


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Additional Information:

© 2008 The American Physical Society.
The authors thank E. Maciá and A. V. Malyshev for helpful conversations. This work was supported by MEC Project MOSAICO and BSCH-UCM Project No. PR34/07-15916. R.P.A.L. acknowledges support by MEC through the Juan de la Cierva program.

Uncontrolled Keywords:Wannier-Stark Ladders, Single Dna-Molecules, Electrical-Transport, Semiconductor Superlattices, Conductivity
Subjects:Sciences > Physics > Materials
ID Code:27316
Deposited On:21 Nov 2014 11:25
Last Modified:21 Nov 2014 11:25

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