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Title: Many electron correlations in stage-1 graphene intercalation compounds

Abstract

Many electron correlations in stage-1 graphene intercalation compounds (GICs) are studied in generalized-random-phase-approximation. With this approximation, we are able to study short range exchange and correlation effects in GICs. These exchange correlations leads to BCS superconducting states in which one electron correlates with another via its correlation hole to form a stable pair of electrons known as Cooper pair. Cooper pair energies are calculated as the excitations in S(q,ω) following a method similar to exciton energy calculations. Short range effects governing local field correction G(q,ω) are studied for all wave vectors and frequencies. We have found a reasonable agreement between our results and the earlier theoretical results.

Authors:
;  [1]
  1. Department of Physics Himachal Pradesh University, Shimla, Shimla-171005 (India)
Publication Date:
OSTI Identifier:
22391715
Resource Type:
Journal Article
Journal Name:
AIP Conference Proceedings
Additional Journal Information:
Journal Volume: 1661; Journal Issue: 1; Conference: ICCMP 2014: International Conference on Condensed Matter Physics 2014, Shimla (India), 4-6 Nov 2014; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0094-243X
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; CLATHRATES; COOPER PAIRS; CORRECTIONS; ELECTRON CORRELATION; ELECTRONS; EXCITATION; GRAPHENE; HOLES; RANDOM PHASE APPROXIMATION; VECTORS

Citation Formats

Acharya, Sidharth, E-mail: AcharyaSidharth19@yahoo.in, and Sharma, Raman, E-mail: sramanb70@mailcity.com. Many electron correlations in stage-1 graphene intercalation compounds. United States: N. p., 2015. Web. doi:10.1063/1.4915394.
Acharya, Sidharth, E-mail: AcharyaSidharth19@yahoo.in, & Sharma, Raman, E-mail: sramanb70@mailcity.com. Many electron correlations in stage-1 graphene intercalation compounds. United States. doi:10.1063/1.4915394.
Acharya, Sidharth, E-mail: AcharyaSidharth19@yahoo.in, and Sharma, Raman, E-mail: sramanb70@mailcity.com. Fri . "Many electron correlations in stage-1 graphene intercalation compounds". United States. doi:10.1063/1.4915394.
@article{osti_22391715,
title = {Many electron correlations in stage-1 graphene intercalation compounds},
author = {Acharya, Sidharth, E-mail: AcharyaSidharth19@yahoo.in and Sharma, Raman, E-mail: sramanb70@mailcity.com},
abstractNote = {Many electron correlations in stage-1 graphene intercalation compounds (GICs) are studied in generalized-random-phase-approximation. With this approximation, we are able to study short range exchange and correlation effects in GICs. These exchange correlations leads to BCS superconducting states in which one electron correlates with another via its correlation hole to form a stable pair of electrons known as Cooper pair. Cooper pair energies are calculated as the excitations in S(q,ω) following a method similar to exciton energy calculations. Short range effects governing local field correction G(q,ω) are studied for all wave vectors and frequencies. We have found a reasonable agreement between our results and the earlier theoretical results.},
doi = {10.1063/1.4915394},
journal = {AIP Conference Proceedings},
issn = {0094-243X},
number = 1,
volume = 1661,
place = {United States},
year = {2015},
month = {5}
}