KINETIC CONFINEMENT AND ZERO–ELECTRIC–FIELD BINDING IN HgCdTe ACCUMULATION LAYERS

2004 ◽  
Vol 18 (27n29) ◽  
pp. 3637-3640
Author(s):  
V. F. RADANTSEV ◽  
G. I. KULAEV ◽  
V. V. KRUZHAEV
Keyword(s):  
Experimental Data ◽  
Magnetic Fields ◽  
Electric Field ◽  
External Electric Field ◽  
Bound States ◽  
The Self ◽  
Screening Length ◽  
Self Consistent ◽  
Level Method ◽  
Capacitance Spectroscopy

The effects of kinetic confinement and forming of surface bound states at a zero external electric field (ZEF) are studied experimentally (by the magneto-capacitance spectroscopy of Landau level method) and theoretically (in 8×8 Kane model). The self-consistent calculations we performed predict the existence of occupied kinetically bound but not true bound states at a zero interface electric field that is in agreement with experimental data. The capacitance oscillations at in 2D plane magnetic fields orientation we observed are associated with oscillations of continuum electrons screening length.

scholarly journals Plasma Parameters around a Chain-Like Structure of Dust Particles in an External Electric Field

Molecules ◽  
2021 ◽  
Vol 26 (13) ◽  
pp. 3846
Author(s):  
Mikhail Salnikov ◽  
Alexander Fedoseev ◽  
Gennadiy Sukhinin
Keyword(s):  
Electric Field ◽  
External Electric Field ◽  
Electric Potential ◽  
Mean Free Path ◽  
The Self ◽  
Dust Particles ◽  
Charged Dust ◽  
Plasma Parameters ◽  
Self Consistent ◽  
A Chain

The formation of a 1D chain-like structure of dust particles in a low-temperature argon plasma was studied. A new numerical model for calculation of the self-consistent spatial distribution of plasma parameters around a chain of dust particles was presented. The model described the motion of positively charged ions in the electric potential of several negatively charged dust particles, taking into account the action of an external electric field. The main advantage of the model was that the charges of the dust particles and the interparticle distances were determined self-consistently. As a result of numerical simulations, the dependencies of the spatial distributions of the plasma parameters (the densities of electrons and ions and the self-consistent electric potential) near the dust particles chain on the strength of the external electric field, an external force acted on the last particle, and the mean free path of the ions was determined. The obtained results made it possible to describe the process of the formation of chain-like structures of dust particles in discharge plasma.

Ion acceleration by multiple laser pulses and their spontaneous electromagnetic fields in plasma

2008 ◽  
Vol 74 (1) ◽  
pp. 111-118
Author(s):  
FEN-CE CHEN
Keyword(s):  
Magnetic Fields ◽  
Electric Field ◽  
Analytical Model ◽  
Electromagnetic Fields ◽  
Equations Of Motion ◽  
Charged Particles ◽  
Laser Pulses ◽  
The Self ◽  
Electric And Magnetic Fields ◽  
Relativistic Equations

AbstractThe acceleration of ions by multiple laser pulses and their spontaneously generated electric and magnetic fields is investigated by using an analytical model for the latter. The relativistic equations of motion of test charged particles are solved numerically. It is found that the self-generated axial electric field plays an important role in the acceleration, and the energy of heavy test ions can reach several gigaelectronvolts.

Electric Field Gradient Calculations of Various Borides

1996 ◽  
Vol 51 (5-6) ◽  
pp. 527-533 ◽  
Author(s):  
K. Schwarz ◽  
H. Ripplinger ◽  
P. Blaha
Keyword(s):  
Electric Field ◽  
First Principles ◽  
Density Functional ◽  
The Self ◽  
Full Potential ◽  
Electric Field Gradients ◽  
Charge Density Distribution ◽  
Functional Theory ◽  
Field Gradients ◽  
Self Consistent

Abstract A first-principles method for the computation of electric field gradients (EFG) is illustrated for various borides. It is based on energy band calculations using the full-potential linearized aug-mented plane wave (LAPW) method within density functional theory. From the self-consistent charge density distribution the EFG is obtained without further approximations by numerically solving Poisson's equation. The dependence of the EFG on structure, chemical composition or substitution is demonstrated for the diborides MB2 (with M = Ti, V, Cr, Zr, Nb, Mo, and Ta), the hexaborides (CaB6, SrB6 and BaB6) and boron carbide which is closely related to α-boron.

Stability analysis of sheared non-neutral relativistic cylindrical electron beams in applied magnetic fields

1991 ◽  
Vol 45 (2) ◽  
pp. 191-201 ◽  
Author(s):  
D. Zoler ◽  
S. Cuperman
Keyword(s):  
Stability Analysis ◽  
Magnetic Fields ◽  
Maxwell Equations ◽  
Electron Beams ◽  
Radial Electric Field ◽  
The Self ◽  
Axial Motion ◽  
Axial Velocity Component ◽  
Self Consistent ◽  
Consistent Treatment

A self-consistent stability analysis of relativistic non-neutral cylindrical electron flows propagating along applied magnetic fields is considered within the framework of the macroscopic cold-fluid-Maxwell equations. The full influence of the equilibrium self-electric and self-magnetic fields is retained. Then the E x B drift (E being the radial electric field created by the uncompensated charge) generates a radial shear, vz(r) and v0(r). The effect of the shear in the axial velocity component, as reflected in the relative axial motion of adjacent concentric layers of beam particles, is investigated. The self-consistent treatment of the problem thus shows that the equilibrium state considered in this paper is unstable.

Changes in Structure and Properties of Oligophenylenes under Selected External Influences

2007 ◽  
Vol 555 ◽  
pp. 509-514 ◽  
Author(s):  
I. Radisavljević ◽  
D. Marjanović ◽  
N. Novaković ◽  
N. Ivanović
Keyword(s):  
Molecular Structure ◽  
Experimental Data ◽  
Electric Field ◽  
External Electric Field ◽  
Uniaxial Compression ◽  
Structure And Properties ◽  
External Influences ◽  
Spectroscopic Analyses

Effects induced by uniaxial compression and external electric field in P2P to P6P oligophenylene molecules are investigated by versatile calculations. In this way some useful relations between particular values of compression or field directions and intensities to specific changes in molecular structure and properties have been established, enabling estimation of possibilities for tuning the materials characteristics and their spectroscopic analyses. The results are compared to the existing experimental data and similar calculations, and some consequences for applications of oligophenylenes-based materials are discussed.

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