Peculiar behavior of the electrical resistivity of MnSi at the ferromagnetic phase transition

Details Peculiar behavior of the electrical resistivity of MnSi at the ferromagnetic phase transition Peculiar behavior of the electrical resistivity of MnSi at the ferromagnetic phase transition

2006-06-13

arxiv.org/abs/cond-mat/0606324v1

Physics

Condensed Matter

Strongly Correlated Electrons

Scientific paper

10.1103/PhysRevB.74.092401

The electrical resistivity of a single crystal of MnSi was measured across its ferromagnetic phase transition line at ambient and high pressures. Sharp peaks of the temperature coefficient of resistivity characterize the transition line. Analysis of these data shows that at pressures to ~0.35 GPa these peaks have fine structure, revealing a shoulder at ~ 0.5 K above the peak. It is symptomatic that this structure disappears at pressures higher than ~0.35 GPa, which was identified earlier as a tricritical point

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