Many-body interaction and deformation of the atomic electron shells in the lattice dynamics of compressed atomic cryocrystals

2016 ◽  
Vol 42 (5) ◽  
pp. 411-420 ◽  
Author(s):  
E. P. Troitskaya ◽  
Ie. Ie. Gorbenko ◽  
E. A. Pilipenko
Keyword(s):  
Lattice Dynamics ◽  
Atomic Electron ◽  
Many Body ◽  
Body Interaction ◽  
Electron Shells

On the possibility of observing many-body effects in atomic electron shells

1967 ◽  
Vol 24 (7) ◽  
pp. 394-396 ◽  
Author(s):  
M.Ya. Amusia ◽  
V.V. Afrosimov ◽  
Yu.S. Gordeev ◽  
N.A. Cherepkov ◽  
S.I. Sheftel
Keyword(s):  
Atomic Electron ◽  
Many Body ◽  
Many Body Effects ◽  
Electron Shells

LATTICE DYNAMICS OF MgO USING THREE-BODY FORCE SHELL MODEL

1989 ◽  
Vol 03 (10) ◽  
pp. 771-776 ◽  
Author(s):  
S. MOHAN ◽  
T. RADJAKOUMAR
Keyword(s):  
Shell Model ◽  
Lattice Dynamics ◽  
Spectroscopic Data ◽  
Body Force ◽  
Phonon Dispersion ◽  
Many Body ◽  
Body Interaction ◽  
Lattice Potential ◽  
The Many ◽  
Three Body

A modified three-body force shell model is applied to evaluate the phonon dispersion values of MgO. The many-body interaction in the lattice potential is well accounted for by this theory. The values of the phonon frequencies evaluated by this method are in good confirmation with the neutron spectroscopic data.

Engineering exciton many-body interaction in atomically thin MoS2

2021 ◽  
Author(s):  
Santu Kumar Bera ◽  
Dipendranath Mandal ◽  
K. V. Adarsh
Keyword(s):  
Many Body ◽  
Body Interaction

Three-body interaction and lattice dynamics of metals

1977 ◽  
Vol 83 (2) ◽  
pp. 615-624 ◽  
Author(s):  
S. K. Sarkar ◽  
S. K. Das ◽  
D. Roy ◽  
S. Sengupta
Keyword(s):  
Lattice Dynamics ◽  
Body Interaction ◽  
Three Body

The quantum theory of lattice dynamics. III

1969 ◽  
Vol 310 (1500) ◽  
pp. 101-109 ◽  
Keyword(s):  
Quantum Theory ◽  
Lattice Dynamics ◽  
Electronic Contribution ◽  
Body Interaction ◽  
Rigid Ion Model

The electronic contribution to the dynamical tensors is examined in more detail and the following results are obtained. First the electronic contribution is shown to be translationally invariant, secondly the assumption that this term can be approximately represented by a two-body interaction is shown to be equivalent to a rigid ion model, and finally this approximation is shown to become exact in the limit q = 0.

First-Principles Study on Crystal Configuration and Many-Body Cohesive Energy of Solid Argon

2019 ◽  
Vol 807 ◽  
pp. 135-140
Author(s):  
Xi Jin Fu
Keyword(s):  
Potential Energy ◽  
Interaction Energy ◽  
First Principles ◽  
Total Potential Energy ◽  
Basis Set ◽  
Many Body ◽  
Body Interaction ◽  
Total Potential ◽  
Geometric Configurations ◽  
Solid Argon

Based on the first-principles, using CCSD(T) ab initio calculation method, many-body potential energy of solid argon are accurately calculated with the atomic distance R from 2.0Å to 3.6Å at T=300K, and firstly establish and discuss the face-centered cubic (fcc) atomic crystal configurations of two-, three-, and four-body terms by geometry optimization. The results shows that the total number of (Ar)2 clusters is 903, which belongs to 12 different geometric configurations, the total number of (Ar)3 clusters is 861, which belongs to 25 different geometric configurations, and the total number of (Ar)4 clusters of is 816 which belongs to 27 different geometric configurations. We find that the CCSD(T) with the aug-cc-pVQZ basis set is most accurate and practical by comprehensive consideration. The total potential energy Un reachs saturation at R>2.0Å when the only two-and three-body interaction energy are considered. When R≤2.0Å, the total potential energy Un must consider four-and higher-body interaction energy to achieve saturation. Many-body expansion potential of fcc solid argon is an exchange convergent series.

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