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

The anomalous Hall conductivity of "dirty" ferromagnetic metals is dominatedby a Berry-phase contribution which is usually interpreted as an intrinsicproperty of the Bloch electrons in the pristine crystal. In this work weevaluate the geometric Hall current directly from the electronic ground statewith disorder, and then recast it as an integral over the crystalline Brillouinzone. The integrand is a generalized k-space Berry curvature, obtained byunfolding the Berry curvature from the small Brillouin zone of a largesupercell. Therein, disorder yields a net extrinsic Hall contribution, which weargue is related to the elusive side-jump effect. As an example, we unfold thefirst-principles Berry curvature of an Fe3Co ordered alloy from the originalfcc-lattice Brillouin zone onto a bcc-lattice zone with four times the volume.Comparison with the virtual-crystal Berry curvature clearly reveals thesymmetry-breaking effects of the substitutional Co atoms.

How disorder affects the Berry-phase anomalous Hall conductivity: the view from k space