Phase diagrams of Kondo alloys
ZWICKNAGL, Gertrud
Technische Universität Braunschweig = Technical University of Braunschweig [Braunschweig]
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Technische Universität Braunschweig = Technical University of Braunschweig [Braunschweig]
ZWICKNAGL, Gertrud
Technische Universität Braunschweig = Technical University of Braunschweig [Braunschweig]
< Reduce
Technische Universität Braunschweig = Technical University of Braunschweig [Braunschweig]
Language
en
Article de revue
This item was published in
Journal of Magnetism and Magnetic Materials. 2021, vol. 520, n° 167405
Elsevier
English Abstract
We analyze the ground state phase diagrams of the Kondo alloy model (KAM) as a function of Kondo coupling (JK), electronic band filling (nc) and magnetic impurity concentration (x). We use DMFT/CPA method to treat the ...Read more >
We analyze the ground state phase diagrams of the Kondo alloy model (KAM) as a function of Kondo coupling (JK), electronic band filling (nc) and magnetic impurity concentration (x). We use DMFT/CPA method to treat the disorder and the inter-site electronic exchange correlations along with mean-field (MF) approximations to decouple the Kondo interaction. Here, we generalize “Doniach-like” phase diagrams of the periodic Kondo lattice( x = 1) to Kondo alloys. We consider the competition between the paramagnetic Kondo phase (K) and purely ferromagnetic (F) or staggered antiferromagnetic (AF) ordered phases. Our phase diagrams are consistent with various experimentally obtained phase diagrams for alloys like Cex La1-x Pt2Si2, Cex La1-x Ni2Ge2, Cex La1-x Ru2Si2, CexLa1-xPd2Si2, or CexLa1-xCu2Ge2.Read less <
English Keywords
Kondo alloys
Phase diagrams
ANR Project
Topologie de surfaces de Fermi et émergence de nouveaux états électroniques dans des systèmes fortement corrélés - ANR-16-CE92-0018
Origin
Hal imported