English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

In this communication we present together four distinct techniques for thestudy of electronic structure of solids : the tight-binding linear muffin-tinorbitals (TB-LMTO), the real space and augmented space recursions and themodified exchange-correlation. Using this we investigate the effect of randomvacancies on the electronic properties of the carbon hexagonal allotrope,graphene, and the non-hexagonal allotrope, planar T graphene. We have insertedrandom vacancies at different concentrations, to simulate disorder in pristinegraphene and planar T graphene sheets. The resulting disorder, both on-site(diagonal disorder) as well as in the hopping integrals (off-diagonaldisorder), introduces sharp peaks in the vicinity of the Dirac point built upfrom localized states for both hexagonal and non-hexagonal structures. Thesepeaks become resonances with increasing vacancy concentration. We find that inpresence of vacancies, graphene-like linear dispersion appears in planar Tgraphene and the cross points form a loop in the first Brillouin zone similarto buckled T graphene that originates from $\pi$ and $\pi$* bands withoutregular hexagonal symmetry. We also calculate the single-particle relaxationtime, $\tau(\vec{q})$ of $\vec{q}$ labeled quantum electronic states whichoriginates from scattering due to presence of vacancies, causing quantum levelbroadening.

Effect of doping on the electronic properties of Graphene and T-graphene : A theoretical approach