Dependence of structure factor and correlation energy on the width of electron wires View Full Text


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Article Info

DATE

2018-02

AUTHORS

Vinod Ashokan, Renu Bala, Klaus Morawetz, Kare Narain Pathak

ABSTRACT

The structure factor and correlation energy of a quantum wire of thickness b ≪ aB are studied in random phase approximation (RPA) and for the less investigated region rs < 1. Using the single-loop approximation, analytical expressions of the structure factor are obtained. The exact expressions for the exchange energy are also derived for a cylindrical and harmonic wire. The correlation energy in RPA is found to be represented by ϵc(b, rs) = α(rs)/b + β(rs) ln(b) + η(rs), for small b and high densities. For a pragmatic width of the wire, the correlation energy is in agreement with the quantum Monte Carlo simulation data. More... »

PAGES

29

References to SciGraph publications

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URI

http://scigraph.springernature.com/pub.10.1140/epjb/e2017-80530-8

DOI

http://dx.doi.org/10.1140/epjb/e2017-80530-8

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https://app.dimensions.ai/details/publication/pub.1100859985


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