Tricritical behavior in MnSi at nearly hydrostatic pressure

Details Tricritical behavior in MnSi at nearly hydrostatic pressure Tricritical behavior in MnSi at nearly hydrostatic pressure

2005-09-12

arxiv.org/abs/cond-mat/0509294v2

Physics

Condensed Matter

Strongly Correlated Electrons

6 pages, 6 figures, reference [16] on page 5 removed

Scientific paper

10.1103/PhysRevB.73.052409

AC magnetic susceptibility of a single crystal of MnSi was measured along the ferromagnetic phase-transition line up to a pressure of 0.8 GPa created by compressed helium. The results show that the tricritical point is situated at much lower pressure and at significantly higher temperature (Ptr~0.355 GPa, Ttr~25.2 K) than was reported previously (~1.2 GPa,~12 K). These new observations put certain constraints on the origin of the tricritical point in MnSi.

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