Effect of Electron-Phonon Interaction on the Density-of-States Tails and Impurity Band Optical Absorption

1980 ◽  
Vol 102 (1) ◽  
pp. 201-208
Author(s):  
N. V. Burbaeva
Keyword(s):  
Optical Absorption ◽  
Density Of States ◽  
Impurity Band ◽  
Phonon Interaction ◽  
Electron Phonon Interaction

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.

Electron-Phonon Interaction in Optical Absorption at the Si(111)2 × 1 Surface

1986 ◽  
Vol 56 (22) ◽  
pp. 2411-2414 ◽  
Author(s):  
F. Ciccacci ◽  
S. Selci ◽  
G. Chiarotti ◽  
P. Chiaradia
Keyword(s):  
Optical Absorption ◽  
Phonon Interaction ◽  
Electron Phonon Interaction

ELECTRON–PHONON INTERACTION IN CARBON NANOTUBES

2010 ◽  
Vol 24 (30) ◽  
pp. 2947-2954 ◽  
Author(s):  
HAMZE MOUSAVI ◽  
HAMED REZANIA
Keyword(s):  
Carbon Nanotubes ◽  
Band Gap ◽  
Density Of States ◽  
Coupling Strength ◽  
Single Walled Carbon Nanotubes ◽  
Function Technique ◽  
Phonon Interaction ◽  
Electron Phonon Interaction ◽  
Holstein Model ◽  
Walled Carbon Nanotubes

The effect of electron–phonon interaction in (8, 0), (10, 0) and (11, 0) semiconducting single-walled carbon nanotubes on the band gap is investigated using the Holstein model and Green's function technique. By comparing numerical results for density of states without phonon modulation and with electron–phonon interaction, it is shown that the band gap decreases when coupling strength increases.

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