Hopping photoconductivity in an exponential density of states

2012 ◽  
Vol 101 (10) ◽  
pp. 103307 ◽  
Author(s):  
A. Iacchetti ◽  
D. Natali ◽  
M. Binda ◽  
L. Beverina ◽  
M. Sampietro
Keyword(s):  
Density Of States ◽  
Exponential Density

The Study of Charge Transport in Nanoscale DNA Structures

2010 ◽  
Vol 1280 ◽  
Author(s):  
G. Bart ◽  
M. R. Singh ◽  
M. Zinke-Allamang
Keyword(s):  
Electrical Conductivity ◽  
Density Of States ◽  
Variable Range Hopping ◽  
Band Tail ◽  
Phonon Interaction ◽  
Dna Structures ◽  
Electron Phonon Interaction ◽  
Electric Field Dependence ◽  
Exponential Density ◽  
Base Distance

AbstractWe have studied the variable range hopping (VRH) mechanism for polarons in DNA structures using an exponential density of states. Due to the electron-phonon interaction localized polarons are formed in the DNA helix. The unwinding of DNA increases molecular orbital overlap between bases while decreasing the base-to-base distance. These types of vibrations create phonons. We consider that DNA has a band tail which has an exponential density of states and we have calculated the temperature- and the electric field dependence of the conductivity. We compare our model with the experiments of the electrical conductivity of samples of double-stranded H5N1 genes of avian Influenza virus DNA. Our theory is able to explain their data.

Erratum: “Hopping photoconductivity in an exponential density of states” [Appl. Phys. Lett. 101, 103307 (2012)]

2013 ◽  
Vol 102 (16) ◽  
pp. 169901
Author(s):  
A. Iacchetti ◽  
D. Natali ◽  
M. Binda ◽  
L. Beverina ◽  
M. Sampietro
Keyword(s):  
Density Of States ◽  
Exponential Density
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