Electrical conductivity of a two-dimensional disordered system with an exponential density of states

1997 ◽  
Vol 10 (2) ◽  
pp. 171-174
Author(s):  
I. Grosu
Keyword(s):  
Electrical Conductivity ◽  
Density Of States ◽  
Two Dimensional ◽  
Disordered System ◽  
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.

ON THE DENSITY OF ELECTRONIC STATES OF TWO-DIMENSIONAL POSITIONALLY DISORDERED SYSTEMS WITH WEAK ELECTRON-ION POTENTIAL

1987 ◽  
Vol 01 (05n06) ◽  
pp. 1321-1328 ◽  
Author(s):  
K.V. BHAGWAT ◽  
S.V. LAWANDE ◽  
D.C. KHANDEKAR
Keyword(s):  
Density Of States ◽  
Disordered Systems ◽  
Gaussian Model ◽  
Dimensional System ◽  
Two Dimensional ◽  
Tail Region ◽  
Disordered System ◽  
Electronic Density ◽  
Average Electron ◽  
Weak Electron

The path-integral formulation of Edwards and Gulyaev has been used to investigate the behaviour of electronic density of states in the two-dimensional positionally disordered systems. The average electron propagator is evaluated within the first cumulant approximation. It is shown that in general the two-dimensional system possesses a non-zero density of states in the band-tail region. In particular an expression for the density of states for a Gaussian model of a two-dimensional disordered system is derived. Numerical values of density of states for this model for some typical values of parameters are also given.

scholarly journals Solvothermal Preparation of Spherical Bi2O3 Nanoparticles Uniformly Distributed on Ti3C2Tx for Enhanced Capacitive Performance

2021 ◽  
Author(s):  
Tao Li ◽  
Xuefeng Chang ◽  
Lifang Mei ◽  
Xiayun Shu ◽  
Jidong Ma ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Chemical Stability ◽  
Layered Structure ◽  
Layered Material ◽  
Two Dimensional ◽  
Capacitive Performance ◽  
Solvothermal Preparation

Ti3C2Tx is a promising new two-dimensional layered material for supercapacitors with good electrical conductivity and chemical stability. However, Ti3C2Tx has problems such as collapse of the layered structure and low...

scholarly journals Effect of dispersity of particle length on electrical conductivity of two-dimensional systems

2019 ◽  
Vol 1163 ◽  
pp. 012006
Author(s):  
Yuri Yu Tarasevich ◽  
Andrei V Eserkepov ◽  
Irina V Vodolazskaya ◽  
Petr G Selin ◽  
Valentina V Chirkova ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Two Dimensional ◽  
Particle Length

Density of states for the two-dimensional, simple-square Anderson model

1981 ◽  
Vol 24 (10) ◽  
pp. 6156-6157 ◽  
Author(s):  
Wei-Min Hu ◽  
Shang-Yuan Ren ◽  
John D. Dow
Keyword(s):  
Density Of States ◽  
Anderson Model ◽  
Two Dimensional

Density of states due to donor-pair molecules in three- and two-dimensional semiconductor systems

1992 ◽  
Vol 41 (3) ◽  
pp. 517-524
Author(s):  
E. A. Guimar�es Costa ◽  
F. De Brito Mota ◽  
A. Ferreira Da Silva
Keyword(s):  
Density Of States ◽  
Two Dimensional
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