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 Tools annual

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 monthly

Global: Zendy Plus monthly

Presents the access of premium content as premium feature

Premium Content

Global: Zendy Plus annual

Global: Zendy Free Plan

We investigate the localization behavior of electrons in a random latticewhich is constructed from a quasi-one-dimensional chain with large coordinatenumber $Z$ and rewired bonds, resembling the small-world network proposedrecently but with site-energy disorder and quantum links instead of classicalones. The random rewiring of bonds in the chain with large $Z$ enhances boththe topological disorder and the effective dimensionality. From the competitionbetween disorder and dimensionality enhancement a transition from localizationto delocalization is found by using the level statistics method combined withthe finite-size scaling analysis. The critical value of the rewiring rate forthis transition is determined numerically. We obtain a universal criticalintegrated distribution of level spacing $s$ in the form $I_{p_{c}}(s)\propto\exp (-A_{c}s^{\alpha})$, with $A_{c}\simeq 1.50$ and $\alpha \simeq 1.0$. Thisreveals the possible existence of metal-insulator transition in materials withchains as the backbones.Comment: 12 pages, 4 figure

Localization-delocalization transition of electron states in a disordered quantum small-world network