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

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.

scholarly journals Double step structure and meandering due to the many body interaction at GaN(0001) surface in N-rich conditions

2011 ◽  
Vol 109 (2) ◽  
pp. 023515 ◽  
Author(s):  
Magdalena A. Załuska-Kotur ◽  
Filip Krzyżewski ◽  
Stanisław Krukowski
Keyword(s):  
Many Body ◽  
Double Step ◽  
Body Interaction ◽  
Step Structure ◽  
The Many

Ab initio theory of many-body interaction and cauchy relations in compressed rare-gas crystals

2011 ◽  
Vol 53 (8) ◽  
pp. 1634-1643 ◽  
Author(s):  
E. P. Troitskaya ◽  
Val. V. Chabanenko ◽  
I. V. Zhikharev ◽  
Ie. Ie. Gorbenko
Keyword(s):  
Ab Initio ◽  
Rare Gas ◽  
Many Body ◽  
Body Interaction ◽  
Ab Initio Theory ◽  
Cauchy Relations

scholarly journals Many-body interaction in semiconductors probed with two-dimensional Fourier spectroscopy

2007 ◽  
Vol 76 (11) ◽  
Author(s):  
Mikhail Erementchouk ◽  
Michael N. Leuenberger ◽  
L. J. Sham
Keyword(s):  
Two Dimensional ◽  
Fourier Spectroscopy ◽  
Many Body ◽  
Body Interaction
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