These materials exhibit a breakdown of Fermi liquid behavior, non-phonon mediated superconductivity, anomalous ordered states, and span a broad chemical-structural phase space (e.g., cuprates, pnictides, heavy fermions, ruthenates, and iridates). In general, the rich variety of ground states that appear in these materials arise from finely tuned energy scales: e.g., the competition between the RKKY interaction and the Kondo effect underpins much of the physics that is observed in f-electron materials that include cerium, ytterbium, and many of the 5f elements. The depth of these materials calls for a focused effort to disentangle their universal phenomena from the multiplicity of the effects of quality and composition. Research in this field is central for driving discovery of new materials with new states of matter that arise from complex electronic interactions. In addition, this approach is likely produce new exotic superconductors with potential for energy and technology applications.
- Quantum critical fluctuations in the heavy fermion compound Ce (Ni0. 935Pd0. 065) 2Ge2
- CeCu 2 Ge 2: Challenging our understanding of quantum criticality
- Suppression of antiferromagnetism by pressure in CaCo 2 P 2
- CeIrIn 5: Superconductivity on a magnetic instability
- Hole doping effect on superconductivity in Ce (Co 1− x Ru x) In 5
- Pressure phase diagram and quantum criticality of CePt 2 In 7 single crystals
- Ferromagnetic quantum critical point in UCo 1− x Fe x Ge