Static structure factor and pair correlation function of liquid K–Bi over a temperature interval of 1100K

2000 ◽  
Vol 276-278 ◽  
pp. 425-426 ◽  
Author(s):  
K Hochgesand ◽  
R Kurzhöfer ◽  
R Winter
Keyword(s):  
Correlation Function ◽  
Temperature Interval ◽  
Structure Factor ◽  
Pair Correlation Function ◽  
Pair Correlation ◽  
Static Structure Factor ◽  
Static Structure

Inter-subband structure factor for a quasi-one-dimensional polaron gas

2016 ◽  
Vol 30 (30) ◽  
pp. 1650218
Author(s):  
Paulo César Miranda Machado ◽  
Francisco Aparecido Pinto Osório ◽  
Antônio Newton Borges
Keyword(s):  
Structure Factor ◽  
Collective Excitation ◽  
Pair Correlation ◽  
Longitudinal Optical ◽  
Static Structure Factor ◽  
Phonon Coupling ◽  
Excitation Spectra ◽  
Static Structure ◽  
One Dimensional ◽  
Subband Structure

In this work, the collective excitation spectra of quasi-one-dimensional plasmon in a rectangular GaAs quantum wire is investigated. Our calculations are performed within the Singwi, Tosi, Land and Sjölander (STLS) self-consistent theory taking into account the plasmon–longitudinal optical (LO) phonon coupling effects. We have employed a three subband model with only the first subband occupied by electrons and we have considered intra-subband and inter-subband transitions. We show that the polaronic effects cause the appearance of dips and oscillations in the static structure factor dispersion relation, which are directly related with the oscillator strength transfer between the collective excitation energy branches. We have also observed oscillations in the pair-correlation function that are characteristic of inter-subband transitions and it denotes partial localization of the particle.

scholarly journals Structure of Ni-P Melts by X-Ray Diffraction

1997 ◽  
Vol 52 (3) ◽  
pp. 284-288
Author(s):  
B. Sedelmeyer ◽  
S. Steeb
Keyword(s):  
Correlation Function ◽  
Coordination Number ◽  
Structure Factor ◽  
Pair Correlation Function ◽  
Pair Correlation ◽  
X Ray Diffraction ◽  
X Ray ◽  
Two Peaks ◽  
Second Peak

Abstract X-ray diffraction was done with molten Ni81 P19 (930°C) and with molten Ni68.8 P31.2 (1160°C). The second peak of the structure factor and the pair correlation function of the Ni81P19 -melt shows a shoulder, as was observed for amorphous Ni80P20 . The first two peaks in the pair correlation function can be modelled using crystalline Ni3 P besides molten Ni. In the case of Ni68.8P31.2 , the first peak in the pair correlation function was modelled using the distance and coordination number as in crystalline Ni2P.

A SIMPLE AND ANALYTICAL STRUCTURE FACTOR FOR THE HARD-DISC FLUID

1996 ◽  
Vol 10 (09) ◽  
pp. 393-400 ◽  
Author(s):  
NELSON STUDART ◽  
HAMILTON V. DA SILVEIRA ◽  
UMBELINO DE FREITAS
Keyword(s):  
Structure Factor ◽  
Pair Correlation ◽  
Mean Field ◽  
Packing Fraction ◽  
Static Structure Factor ◽  
Static Structure ◽  
Type Approximation ◽  
Density Response Function ◽  
Density Response ◽  
The Mean

We present an analytical expression for the static structure factor of hard-disc fluids by using the density–density response function in the mean-field-type approximation in which the effective potential between the particles is written in terms of the pair correlation function as proposed by Singwi, Tosi, Land and Sjölander. The structure factor exhibits the main features of the hard-disc system as compared with other theories and computer simulations at low and intermediate values of the packing fraction.

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