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

We compute the multifractal spectra associated to local density of states(LDOS) fluctuations due to weak quenched disorder, for a single Dirac fermionin two spatial dimensions. Our results are relevant to the surfaces of Z_2topological insulators such as Bi_2Se_3 and Bi_2Te_3, where LDOS modulationscan be directly probed via scanning tunneling microscopy. We find a qualitativedifference in spectra obtained for magnetic versus non-magnetic disorder.Randomly polarized magnetic impurities induce quadratic multifractality atfirst order in the impurity density; by contrast, no operator exhibitsmultifractal scaling at this order for a non-magnetic impurity profile. For thetime-reversal invariant case, we compute the first non-trivial multifractalcorrection, which appears at two loops (impurity density squared). We discussspectral enhancement approaching the Dirac point due to renormalization, and wesurvey known results for the opposite limit of strong disorder.

Multifractal nature of the surface local density of states in three-dimensional topological insulators with magnetic and nonmagnetic disorder