Quantum criticality features in the Co doped MnSi

TL;DR

This paper uncovers a universal behavior in the heat capacity of Co-doped MnSi, indicating an invariant spin subsystem energy despite impurity variations, linked to the electron system's response to doping-induced volume changes.

Contribution

It reveals a universal line in heat capacity related to spin fluctuations that is independent of impurity content in (Mn,Co)Si, suggesting invariance in the spin subsystem energy.

Findings

Universal line in heat capacity independent of impurity content

Invariance of spin subsystem energy with doping

Response of itinerant electrons to volume change at doping

Abstract

The mysterious universal line revealing an independence of spin fluctuation contributions to the heat capacity of (Mn,Co)Si on impurity contents and its nature is discovered. This situation probably declares an invariance of the spin subsystem energy that may provide by the response of itinerant electron system on the volume change at doping.