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 Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

We study numerically the influence of disorder and localization effects onthe local spectroscopic characteristics and infrared optical properties of$\mbox{Ga}_{1-x}\mbox{Mn}_x\mbox{As}$. We treat the band structure and disordereffects at an equal level by using exact diagonalization supercell simulationmethod. This method accurately describes the low doping limit and gives a clearpicture of the transition to higher dopings, which captures the localizationeffects inaccessible to other theoretical methods commonly used. Oursimulations capture the rich mid-gap localized states observed in scanningtunneling microscopy studies and reproduce the observed features of theinfrared optical absorption experiments. We show clear evidence of a disorderedvalence band model for metallic samples in which (i) there is no impurity banddetached from the valence band, (ii) the disorder tends to localize and pullstates near the top of the valence band into the gap region, and (iii) theFermi energy is located deep in the delocalized region away from the mobilityedge. We identify localized states deep in the gap region by visualizing theprobability distribution of the quasiparticles and connecting it to theirrespective participation ratios. The analysis of the infrared-opticalabsorption data indicates that it does not have a direct relation to the natureof the states at the Fermi energy.

Disorder and localization effects on the local spectroscopic and infrared-optical properties of $\mbox{Ga}_{1-x}\mbox{Mn}_x\mbox{As}$