Theoretical investigation, of Cochran’s mode frequency, and electrical permittivity of KH2AsO4 (KDA) crystal by using Zuberav’s statistical Green function technique

We studied transport properties through a noninteracting quantum dots array with a side quantum dot employing the equation of motion method and Green function technique. The linear conductance has been calculated numerically. It is shown that an antiresonance always pinned at the energy level of side quantum dot. The conductance develops Fano line shape when the side quantum dot level is not aligned with that of the quantum dots in the array due to quantum interference through different channels.

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THE COMPENSATION BEHAVIOR AND INITIAL SUSCEPTIBILITIES OF A MIXED-SPIN HEISENBERG FERRIMAGNETIC SYSTEM IN AN EXTERNAL MAGNETIC FIELD

International Journal of Modern Physics B ◽

10.1142/s0217979207036898 ◽

2007 ◽

Vol 21 (07) ◽

pp. 1077-1087 ◽

Cited By ~ 1

Author(s):

JUN LI ◽

AN DU ◽

GUOZHU WEI

Keyword(s):

Magnetic Field ◽

Magnetic Properties ◽

Transition Temperature ◽

External Magnetic Field ◽

Green Function ◽

Compensation Point ◽

Function Technique ◽

Honeycomb Lattice ◽

Mixed Spin ◽

Compensation Behavior

The magnetic properties of a mixed spin-2 and spin-5 / 2 Heisenberg ferrimagnetic system on a layered honeycomb lattice are investigated theoretically by a multisublattice Green-function technique which takes into account the quantum nature of Heisenberg spins. We calculate the magnetization and the compensation temperature and transition temperature of the system in an external magnetic field and in a zero external magnetic field, and find that the transition temperature of the system increases on the effect of an external magnetic field, the compensation point disappears when the single-ion anisotropy is not large and there are two compensation points when the anisotropy is large. We also calculate the initial susceptibilities of the system.

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Electron correlations in narrow energy bands

Proceedings of the Royal Society of London Series A - Mathematical and Physical Sciences ◽

10.1098/rspa.1963.0204 ◽

1963 ◽

Vol 276 (1365) ◽

pp. 238-257 ◽

Cited By ~ 4645

Keyword(s):

Approximate Solution ◽

Green Function ◽

Approximate Model ◽

Function Technique ◽

Electron Correlations ◽

Energy Bands ◽

Hartree Fock ◽

Correlation Problem ◽

Main Effects ◽

London Model

It is pointed out that one of the main effects of correlation phenomena in d - and f -bands is to give rise to behaviour characteristic of the atomic or Heitler-London model. To investigate this situation a simple, approximate model for the interaction of electrons in narrow energy bands is introduced. The results of applying the Hartree-Fock approximation to this model are examined. Using a Green function technique an approximate solution of the correlation problem for this model is obtained. This solution has the property of reducing to the exact atomic solution in the appropriate limit and to the ordinary uncorrelated band picture in the opposite limit. The condition for ferromagnetism of this solution is discussed. To clarify the physical meaning of the solution a two-electron example is examined.

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A NEW STUDY OF THE SURFACE ELECTRONIC STRUCTURE OF W(001)

Surface Review and Letters ◽

10.1142/s0218625x94000941 ◽

1994 ◽

Vol 01 (04) ◽

pp. 685-688

Author(s):

JEROEN VAN HOOF ◽

JOHN E. INGLESFIELD ◽

IAN COLLINS

Keyword(s):

Electronic Structure ◽

Green Function ◽

Surface Reconstruction ◽

Electronic Structure Calculations ◽

The State ◽

Function Technique ◽

Surface Electronic Structure ◽

Structure Calculations

We have performed surface electronic structure calculations for W(001) using the surfaceembedded Green function technique. These calculations enable us to interpret angle-resolved photoemission spectra, which play an important role in the controversy over the surface reconstruction of W(001). We show that the state which, according to most theories, plays a key role in driving the reconstruction is apparently invisible in the photoemission spectra, because of its in-plane character.

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Recursive Green function technique applied to acoustic wave propagation

The Journal of the Acoustical Society of America ◽

10.1121/1.4744278 ◽

2001 ◽

Vol 109 (5) ◽

pp. 2353-2353

Author(s):

Mauro S. Ferreira ◽

Gerrit E. W. Bauer ◽

Kees Wapenaar

Keyword(s):

Wave Propagation ◽

Green Function ◽

Acoustic Wave ◽

Function Technique ◽

Acoustic Wave Propagation

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On the Numerical Radiation Condition in the Steady-State Ship Wave Problem

Journal of Ship Research ◽

10.5957/jsr.1987.31.1.14 ◽

1987 ◽

Vol 31 (01) ◽

pp. 14-22

Author(s):

Peter Schjeldahl Jensen

Keyword(s):

Green Function ◽

Three Dimensional ◽

Radiation Condition ◽

Function Technique ◽

Wave Problem ◽

Ship Wave ◽

Rankine Source ◽

Wigley Hull ◽

The Green Function ◽

The Waves

The waves created by a thin ship sailing in calm water are examined. The velocity potential of the ship in the zero Froude number case is known and the additional potential due to the waves is calculated by the Green function technique. The simple Green function corresponding to the Rankine source potential is used here. Two major problems exist with this method. In the Neumann-Poisson boundary-value problem- probably the first iteration toward a full nonlinear solution to the ship wave problem _it is necessary to impose a radiation condition in order to get uniqueness. This problem is related to the second one, which arises due to the existence of eigensolutions. The two-dimensional situation is here analyzed first, thereby easing the three-dimensional analysis. A numerical scheme is constructed and results for the twodimensional waves generated by a submerged vortex and for the three-dimensional waves due to the Wigley hull are presented.

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