engleski

Reentrant quantum criticality in Yb2Pd2Sn

We report the discovery of two consecutive, pressure driven magnetic instablities in Yb2Pd2Sn. They emerge in a non-Fermi liquid environment at the initial and the final point of a dome-like, single magnetic phase at pressures pc1 = 1 GPa and pc2 = 4 GPa. This singular behavior of Yb compounds is supposed to result from mutually competing, pressure modi ed energy scales, which in case of Yb2Pd2Sn cause a sign change of the pressure dependence of the Kondo temperature TK and magnetic ordering temperature TN.

magnetic ordering ; quanum critical point ; Yb2Pd2Sn

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