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arXiv · 1507.05227

Scrutinizing Hall effect in Mn$_{1-x}$Fe$_{x}$Si: Fermi surface evolution and hidden quantum criticality

V. V. Glushkov·I. I. Lobanova·V. Yu. Ivanov·V. V. Voronov·V. A. Dyadkin·N. M. Chubova·S. V. Grigoriev·S. V. Demishev
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Abstract

Separating between ordinary (OHE) and anomalous (AHE) Hall effect in the paramagnetic phase of Mn$_{1-x}$Fe$_{x}$Si reveals OHE sign inversion associated with the hidden quantum critical (QC) point $x^*\sim0.11$. The semimetallic behavior at intermediate Fe content leads to verifiable predictions in the field of fermiology, magnetic interactions and QC in Mn$_{1-x}$Fe$_{x}$Si. The change of electron and hole concentrations is considered as a driving force for tuning the QC regime in Mn$_{1-x}$Fe$_{x}$Si via modifying of RKKY exchange interaction within the Heisenberg model of magnetism.

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V. V. Glushkov, I. I. Lobanova, V. Yu. Ivanov, V. V. Voronov, V. A. Dyadkin, N. M. Chubova, S. V. Grigoriev, S. V. Demishev. 2015-07-18. Scrutinizing Hall effect in Mn$_{1-x}$Fe$_{x}$Si: Fermi surface evolution and hidden quantum criticality. https://doi.org/10.1103/physrevlett.115.256601

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