ABSTRACT
Quantum many-body systems may undergo a quantum phase transition (QPT), i.e., a transformation between different types of order at zero temperature. A QPT is driven by a non-thermal control parameter like pressure; if continuous, it takes place at a quantum critical point (QCP). During the past years, the investigation of QCPs has become a fascinating area of condensedmatter research on a variety of material classes, ranging from insulating quantum magnets to conducting transition-metal oxides and heavy-fermion (HF) metals [1]. Antiferromagnetic (AF) HF metals have emerged as model systems to explore quantum criticality and its potential to give way to novel phases, notably superconductivity. Moreover, recent studies concerning the interrelationship between the Kondo effect and magnetic correlations in these systems revealed two qualitatively different types of QCPs.
