Special Issue Article

Nanoscale Research Letters

, Volume 5, Issue 3, pp 501-504

Open Access This content is freely available online to anyone, anywhere at any time.

Polaron Hopping in Nano-scale Poly(dA)–Poly(dT) DNA

  • Mahi R. SinghAffiliated withDepartment of Physics and Astronomy, The University of Western Ontario
  • , Graeme BartAffiliated withDepartment of Physics and Astronomy, The University of Western Ontario Email author 
  • , Martin Zinke-AllmangAffiliated withDepartment of Physics and Astronomy, The University of Western Ontario

Abstract

We investigate the current–voltage relationship and the temperature-dependent conductance of nano-scale samples of poly(dA)–poly(dT) DNA molecules. A polaron hopping model has been used to calculate the I–V characteristic of nano-scale samples of DNA. This model agrees with the data for current versus voltage at temperatures greater than 100 K. The quantities G 0 , i 0 , and T 1d are determined empirically, and the conductivity is estimated for samples of poly(dA)–poly(dT).

Keywords

DNA Polaron hopping Semiconductor