Kondo effect in metallic glasses with non-Fermi liquid behavior

TL;DR

This paper investigates how Gd atom microalloying in metallic glasses induces Kondo effects and non-Fermi-liquid behavior, highlighting the role of structural disorder in these phenomena.

Contribution

It demonstrates the coexistence of Kondo effect and non-Fermi-liquid behavior in Gd-alloyed metallic glasses due to structural disorder, offering new insights into their electronic properties.

Findings

Gd-alloyed glasses exhibit Kondo effect characteristics.

Non-Fermi-liquid ground states are identified in these alloys.

Structural disorder is linked to the observed electronic behaviors.

Abstract

By microalloying of Gd atoms with 4f electrons into CuZrAl or MgCuY glassy alloys, they display a variety of puzzling behaviors such as the characteristic of Kondo effect. The ground states of the Gd-alloyed systems are determined to have non-Fermi-liquid characteristics which derive from the strong structural disorder. The Kondo effect in these glassy alloys is attributed to the strong structural disorder. The coexistence of the Kondo effect and strong structural disorder has implications for the understanding the origin of the puzzling non-Fermi-liquid behavior.