Physical properties of (Mn<sub>1-x</sub>Fe<sub>x</sub>)Si at x=0.15 along the critical trajectory
POSTER
Abstract
We report results of studying the magnetization, specic heat and thermal expansion of a single
crystal with nominal composition (Mn1-xFex)Si with x=0.15. We found no thermodynamic evidences
in favor of a second order phase transition in this material. The trajectory corresponding
to the present composition of (MnFe)Si is a critical one, i.e. approaching quantum critical point at
lowering temperature, but some properties may feel the cloud of helical fluctuations bordering the phase transition line.
crystal with nominal composition (Mn1-xFex)Si with x=0.15. We found no thermodynamic evidences
in favor of a second order phase transition in this material. The trajectory corresponding
to the present composition of (MnFe)Si is a critical one, i.e. approaching quantum critical point at
lowering temperature, but some properties may feel the cloud of helical fluctuations bordering the phase transition line.
*AEP and SMS greatly appreciate financial support of the Russian Foundation
for Basic Research (grant No. 18-02-00183) and the Russian Science Foundation (grant 17-12-01050).
Presenters
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Sergei Stishov
- Institute for High Pressure Physics