Inverse indirect magnetic exchange
Andrej Schwabe, Irakli Titvinidze, Michael Potthoff
TL;DR
This paper investigates how Kondo singlets influence magnetic interactions in nanostructures, revealing oscillatory exchange coupling that can lead to stable magnetic order.
Contribution
It introduces a detailed analysis of inverse indirect magnetic exchange mediated by Kondo singlets, highlighting its oscillatory nature and impact on magnetic ordering.
Findings
Oscillatory distance dependence of magnetic exchange coupling.
Robust ferro- or antiferromagnetic order in multi-impurity systems.
Kondo singlets significantly alter conduction-electron-mediated magnetic interactions.
Abstract
Magnetic moments strongly coupled to the spins of conduction electrons in a nanostructure can confine the conduction-electron motion due to scattering at almost localized Kondo singlets. We study the resulting local-moment formation in the conduction-electron system and the magnetic exchange coupling mediated by the Kondo singlets. Its distance dependence is oscillatory and induces robust ferro- or antiferromagnetic order in multi-impurity systems.
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