On the theory of thermal switching in semiconducting devices. II. Discussion of the static current-voltage characteristic and the temperature, electric field, and current density distribution in the case of cylindrical symmetry

1972 ◽  
Vol 12 (2) ◽  
pp. 655-661 ◽  
Author(s):  
W. Brodkorb ◽  
W. Haubenreisser
Keyword(s):  
Electric Field ◽  
Density Distribution ◽  
Current Density ◽  
Current Density Distribution ◽  
Cylindrical Symmetry ◽  
Voltage Characteristic ◽  
Current Voltage Characteristic ◽  
Current Voltage ◽  
Thermal Switching

ELECTRIC FIELD-ASSISTED RELAXATION OF THE CHARGE DENSITY WAVES IN K0.3MoO3

2007 ◽  
Vol 21 (27) ◽  
pp. 1863-1867 ◽  
Author(s):  
SONG YUE
Keyword(s):  
Electric Field ◽  
Charge Density ◽  
Charge Density Waves ◽  
Voltage Characteristic ◽  
Metastable States ◽  
Threshold Field ◽  
Density Waves ◽  
Current Voltage Characteristic ◽  
Current Voltage ◽  
Ohmic Conductivity

The evolution of the current-voltage characteristic in K 0.3 MoO 3 was observed intuitively with the presence of current cycling. No variation of the ohmic conductivity was distinguished, while the threshold field for the charge density waves depinning exhibited distinct enhancement with the current cycling. These results were attributed to the electric field-assisted metastable states' relaxation of the charge density waves.

Conductivity of impurity graphene nanoribbons and gate electric field

2017 ◽  
Vol 31 (36) ◽  
pp. 1750340
Author(s):  
Natalia Konobeeva ◽  
Mikhail Belonenko
Keyword(s):  
Electric Field ◽  
Graphene Nanoribbons ◽  
Constant Electric Field ◽  
Tight Binding ◽  
Tunneling Current ◽  
Graphene Nanoribbon ◽  
Voltage Characteristic ◽  
Current Voltage Characteristic ◽  
Tight Binding Approximation ◽  
Current Voltage

In this paper, we investigate the influence of a gate electric field on the tunneling current for the contact of impurity graphene nanoribbon with a metal or quantum dots. Based on the Hamiltonian for graphene in the tight-binding approximation, the density of states is calculated, which allows us to obtain a tunneling current. We analyze the effect of the field magnitude on the detecting possibility of an impurity in the graphene nanoribbon. A sufficient change of current–voltage characteristic (CVC) of the contact is observed, with an increase in the constant electric field applied parallel to the nanoribbon plane.

scholarly journals Magneto-acousto-electrical tomography : a potential imaging method for current density and electrical impedance

2021 ◽  
Author(s):  
Syed Haider
Keyword(s):  
Density Distribution ◽  
Current Density ◽  
Electrical Impedance ◽  
Current Density Distribution ◽  
Biological Tissues ◽  
Voltage Source ◽  
Electrical Tomography ◽  
Lead Field ◽  
Current Voltage ◽  
A Current

This thesis is about investigating a potential imaging modality, magneto-acousto-electrical tomography (MAET), to provide high-spatial-resolution images of lead field current density and electrical impedance of biological tissues. A lead field current density distribution is the one obtained when a current/voltage source is applied to a sample via a pair of electrodes. The lead field current density distribution can potentially be used to obtain electrical impedance distribution which is helpful in differentiating normal and cancerous tissues. To image lead filed current density, instead of directly applying a current/voltage source to the sample, the sample is placed in a static magnetic field and an ultrasound is focused on it to simulate a point like current dipole source in the focal zone. Electrodes are used to detect the voltage/current generated by the ultrasound in the sample, which according to the reciprocity theorem is proportional to a component of the lead field current density.

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