Custers et al. provide a new materials physics solution to the question of whether Kondo destruction requires two dimensions. The study has found that a new heavy-fermion compound Ce3Pd20Si6 is cubic, and hence manifestly 3D, which exhibits all the qualities of Kondo destruction. A careful low-temperature transport and specific heat measurements show all the hallmarks of Kondo breakdown, a linear resistivity, a jump in the Hall constant and a logarithmic temperature dependence of the specific heat. It is also found that just prior to the antiferromagnetic phase transition, Ce 3Pd20Si6 develops a staggered quadrupolar order, in which the shape of the cerium atoms deforms in an alternating pattern across the crystal. In a magnetic field, the different shapes of the cerium atoms have different magnetic polarizabilities, so that in the presence of staggered quadrupolar order, a field induces a small antiferromagnetic density wave.
All Science Journal Classification (ASJC) codes
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering