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

Hexagonal CoSn is a newly-discovered frustrated kagome metal. It showsclose-to-textbook flat bands and orbital-selective Dirac fermions, which arelargely associated with its strongly correlated Co-3$d$ orbitals. Becausecorrelated electronic states are easily regulated by external conditions (suchas chemical doping, pressure, and temperature), the fate of thesekagome-derived electronic bands upon temperature becomes an interesting andunsolved question. In this work, we try to study the temperature-dependentelectronic structures of hexagonal CoSn by means of the density functionaltheory in conjunction with the embedded dynamical mean-field theory. We findthat hexagonal CoSn is in close proximity to a Mott insulating state at ambientcondition. Special attention is devoted to the evolution of its Co-3$d$electronic states with respect to temperature. At least six differenttemperatures (or energy scales), namely $T^{*}$, $T_{\text{FL}}$,$T_{\text{S1}}$ (and $T_{\text{S2}}$), $T_{\text{SF}}$, and $\bar{T}$, arefigured out. They are related to stabilization of the "pseudogap" state,emergence of the non-Fermi-liquid phase, onset (and completeness) of theintermediate spin state, occurrence of the spin-frozen phase, beginning of theorbital freezing transition, respectively.

Temperature dependence of correlated electronic states in archetypal kagome metal CoSn