نتایج جستجو برای: dielectric tensor

تعداد نتایج: 82018  

1996
Yu. P. Rybakov B. Saha

It is shown that the Maxwell's equations for surface electromagnetic TM waves, propagating along the plane boundary between two nonlinear dielectrics with arbitrary diagonal tensor of dielectric permittivity, depending on |E|, can be integrated in quadratures.

2013
Xiang Gao John A. Woollam Roger D. Kirby David J. Sellmyer C. T. Tanaka Jagadeesh S. Moodera D. J. Sellmyer J. S. Moodera Francis Bitter

The diagonal component ␧ xx and off-diagonal component ␧ xy of the complex dielectric tensor for the ferromagnetic compound NiMnSb are determined using ex situ spectroscopic ellipsometry and magneto-optic analysis over the spectral range from 0.7 to 6.2 eV. The effects of the overcoat on the raw data are removed by the analysis. First, the complex ␧ xx of thin-film NiMnSb were determined by ex ...

2011
SEAN HOLMAN

The problem of polarization tomography is considered on a Riemannian manifold. This problem comes from the physical problem of recovering the anisotropic part of the dielectric permittivity tensor of a quasi-isotropic medium from polarization measurements made around the boundary, but is more general. In greater than three dimensions local uniqueness and stability are established for generic ba...

2016
Dawei Liu Bo Cheng Xiaotian Pan Lifang Qiao

A new method of designing horn-fed frequency scanning holographic antenna is proposed. The artificial surface design of holographic antenna is based on generalized law of reflection. The input admittance is utilized to construct the interference pattern of the surface which is intervened by the excitation wave and the required radiation wave. The scalar admittance unit cell which is composed of...

2004
R. Gaelzer L. F. Ziebell R. S. Schneider

We have recently discussed the correct form of the dispersion relation for electrostatic waves in inhomogeneous plasmas, considering for simplicity the particular case in which the magnetic field is homogeneous and other plasma parameters can be inhomogeneous, and deriving a general expression for the dielectric constant, valid for arbitrary direction of propagation [1-3] The situation in which...

2007
R. L. Dewar

Classical relativistic field theory is used as a basis for a general discussion of the problem of splitting up the total energy-momentum tensor ofa system into contributions from its component subsystems. Both the Minkowski and Abraham forms (including electrostriction) arise naturally in alternative split-up procedures applied to a nondispersive dielectric fluid. The case of an electromagnetic...

2009
D. J. Thuecks C. A. Kletzing S. Vincena

Measurements of shear Alfvén waves are used to test the predictions of a variety of different electron collision operators, including several Krook collision operators as well as a Lorentz collision operator. New expressions for the collisional warm-plasma dielectric tensor resulting from the use of the fully-magnetized collisional Boltzmann equation are presented here. Theoretical predictions ...

Journal: :Computer Physics Communications 2006
Claudia Ambrosch-Draxl Jorge O. Sofo

We present a scheme for the calculation of linear optical properties by the all-electron full-potential linearized augmented planewave (LAPW) method. A summary of the theoretical background for the derivation of the dielectric tensor within the random-phase approximation is provided together with symmetry considerations and the relation between the optical constants. The momentum matrix element...

2014
B. D. McVey

By acceptance of this article, the publisher and/or recipient acknowledges the U.S. Governments's right to retain a nonexclusive, royalty-free license in and to any copyright covering this paper. Abstract A solution is obtained for the plasma fields generated by an external line current in a slab geometry. The form of the solution is a summation over the various plasma waves which are defined b...

Journal: :journal of physical and theoretical chemistry 0
farideh keshavarz rezaei -

the physical and chemical properties of pyrazole and pyrazoline molecules were theoreticallystudied by gaussian 03, software with nmr and molecular orbital calculations at b3lyp/6-31g andb3lyp/6-31+g(d) levels, in gas phase and solution. in this study a comparison effect of threesolvents with different dielectric constants on pyrazole and pyrazoline molecules in aspect energyinteraction between...

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