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 apply the extended (statistically-consistent, SGA) Gutzwiller-typeapproach to the periodic Anderson model (PAM) in an applied magnetic field andin the strong correlation limit. The finite-U corrections are includedsystematically by transforming PAM into the form with Kondo-type interactionand residual hybridization, appearing both at the same time. This effectiveHamiltonian represents the essence of \textit{Anderson-Kondo lattice model}. Weshow that in ferromagnetic phases the low-energy single-particle states arestrongly affected by the presence of the applied magnetic field. We also findthat for large values of hybridization strength the system enters the so-called\textit{locked heavy fermion state}. In this state the chemical potential liesin the majority-spin hybridization gap and as a consequence, the systemevolution is insensitive to further increase of the applied field. However, fora sufficiently strong magnetic field, the system transforms from the lockedstate to the fully spin-polarized phase. This is accompanied by a metamagnetictransition, as well as by drastic reduction of the effective mass ofquasiparticles. In particular, we observe a reduction of effective massenhancement in the majority-spin subband by as much as 20% in the fullypolarized state. The findings are consistent with experimental results forCe$_x$La$_{1-x}$B$_6$ compounds. The mass enhancement for the spin-minorityelectrons may also diminish with the increasing field, unlike for thequasiparticles states in a single narrow band in the same limit of strongcorrelations.

Anderson lattice with explicit Kondo coupling: general features and the field-induced suppression of heavy-fermion state in ferromagnetic phase