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 investigate a possibility of Hund's metal behavior in the Hubbard modelwith asymmetric density of states having peak(s). Specifically, we consider thedegenerate two-band model and compare its results to the five-band model withrealistic density of states of iron and nickel, showing that the obtainedresults are more general, provided that the hybridization between states ofdifferent symmetry is sufficiently small. We find that quasiparticle dampingand the formation of local magnetic moments due to Hund's exchange interactionare enhanced by both, the density of states asymmetry, which yields strongercorrelated electron or hole excitations, and the larger density of states atthe Fermi level, increasing the number of virtual electron-hole excitations.For realistic densities of states these two factors are often interrelatedbecause the Fermi level is attracted towards peaks of the density of states. Wediscuss the implication of the obtained results to various substances andcompounds, such as transition metals, iron pnictides, and cuprates.

Effect of density of states peculiarities on Hund's metal behavior