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Chetverikov AP, Ebeling W, Lakhno VD, et al. Discrete-breather-assisted charge transport along DNA-like molecular wires. Phys Rev E. 2019;100(5):052203doi: 10.1103/PhysRevE.100.052203.
Chetverikov, A. P., Ebeling, W., Lakhno, V. D., & Velarde, M. G. (2019). Discrete-breather-assisted charge transport along DNA-like molecular wires. Physical review. E, 100(5), 052203. https://doi.org/10.1103/PhysRevE.100.052203
Chetverikov, A P, et al. "Discrete-breather-assisted charge transport along DNA-like molecular wires." Physical review. E vol. 100,5 (2019): 052203. doi: https://doi.org/10.1103/PhysRevE.100.052203
Chetverikov AP, Ebeling W, Lakhno VD, Velarde MG. Discrete-breather-assisted charge transport along DNA-like molecular wires. Phys Rev E. 2019 Nov;100(5):052203. doi: 10.1103/PhysRevE.100.052203. PMID: 31869988.
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Phys Rev E. 2019 Nov;100(5):052203. doi: 10.1103/PhysRevE.100.052203.

Discrete-breather-assisted charge transport along DNA-like molecular wires.

Physical review. E

A P Chetverikov, W Ebeling, V D Lakhno, M G Velarde

Affiliations

  1. Faculty of Physics, Saratov National Research State University, Astrakhanskaya, 83, Saratov-410012, Russia.
  2. Institute of Mathematical Problems of Biology-Branch of Keldysh Institute of Applied Mathematics, Russian Academy of Sciences, Professor Vitkevich St., 1, Pushchino-142290, Moscow Region, Russia.
  3. Institut für Physik, Humboldt Universität Berlin, Newtonstrasse 15, Berlin-12489, Germany.
  4. Instituto Pluridisciplinar, Universidad Complutense, Paseo Juan XXIII, 1, Madrid-28040, Spain.

PMID: 31869988 DOI: 10.1103/PhysRevE.100.052203

Abstract

Mobile discrete breathers (MDBs) are here suggested as localized excitations underlying the trapping and transport of charged particles (electron or hole) along a DNA-like molecular wire with anchored ends such as attached to two electrodes. For illustration the Peyrard-Bishop-Dauxois-Holstein (PBDH) model is used. MDBs are excited by imposing appropriate disturbances to velocities or space positions of adjacent nucleotide pairs or lattice units of the wire. They can be directed either towards or away from the wire hence transverse to it. Numerical computer simulations show that a rather stable quasiparticle MDB + electron is possible when just a few of the nucleotide pairs near one of the fixed ends of the wire are excited. For the process to be effective, the charge, e.g., the electron, must be initially placed around the disturbed region of the molecule. Once the MDB + electron quasiparticle is formed it may be transported to quite a long distance up to ca. 60-70 nm in real space. Our findings show that such process does not demand intervention of an externally applied electric field and hence it may be considered as alternative to the polaron transport process.

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