Pressure-induced antiferromagnetic dome in the heavy-fermion Yb2 Pd 2 In 1-x Snx system

In the heavy-fermion system Yb2 Pd 2 In 1-x Snx , the interplay of crystal-field splitting, Kondo effect, andRuderman-Kittel-Kasuya-Yosida interactions leads to complex chemical-, pressure-, and magnetic-field phasediagrams still to be explored in full detail. By using a series of techniques, we show that even modest changesof parameters other than temperature are sufficient to induce multiple quantum-critical transitions in this highlysusceptible heavy-fermion family. In particular, we show that, above ~10 kbar, hydrostatic pressure not onlyinduces an antiferromagnetic phase at low temperature, but it likely leads to a reorientation of the Yb magneticmoments and/or the competition among different antiferromagnetic configurations.