Entanglement in Anderson Nanoclusters

Abstract

We investigate the two-particle spin entanglement in magnetic nanoclusters described by the periodic Anderson model. An entanglement phase diagram is obtained, providing a novel perspective on a central property of magnetic nanoclusters, namely the temperature dependent competition between local Kondo screening and nonlocal Ruderman-Kittel-Kasuya-Yoshida spin ordering. We find that multiparticle entangled states are present for finite magnetic field as well as in the mixed valence regime and away from half filling. Our results emphasize the role of charge fluctuations.

5 pages, 3 figures

References in corpus (5)

• Single-Site Entanglement of Fermions at a Quantum Phase Transition
• Thermal entanglement properties of small spin clusters
• Dimerization induced by the RKKY interaction
• Kondo Lattice Model with Finite Temperature Lanczos Method
• Entanglement of an impurity and conduction spins in the Kondo model