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

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

G Lamura;A Martinelli;
2020

Abstract

In the heavy-fermion system Yb2 Pd 2 In 1-x Snx , the interplay of crystal-field splitting, Kondo effect, and Ruderman-Kittel-Kasuya-Yosida interactions leads to complex chemical-, pressure-, and magnetic-field phase diagrams still to be explored in full detail. By using a series of techniques, we show that even modest changes of parameters other than temperature are sufficient to induce multiple quantum-critical transitions in this highly susceptible heavy-fermion family. In particular, we show that, above ~10 kbar, hydrostatic pressure not only induces an antiferromagnetic phase at low temperature, but it likely leads to a reorientation of the Yb magnetic moments and/or the competition among different antiferromagnetic configurations.
2020
Istituto Superconduttori, materiali innovativi e dispositivi - SPIN
heavy-fermion
Ruderman-Kittel-Kasuya-Yosida interaction
quantum-critical transitions
hydrostatic pressure
muon-spectroscopy
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.14243/424873
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