Superconductivity in Magnetically Ordered CeTe_{1.82}
M. H. Jung, A. Alsmadi, H. C. Kim, Yunkyu Bang, K. H. Ahn, K. Umeo, A. H. Lacerda, H. Nakotte, H. C. Ri, T. Takabatake
Abstract
We report the discovery of pressure-induced superconductivity in a semimetallic magnetic material CeTe_{1.82}. The superconducting transition temperature T_{SC} = 2.7 K (well below the magnetic ordering temperatures) under pressure (> 2 kbar) is remarkably high, considering the relatively low carrier density due to a charge-density-wave transition associated with lattice modulation. The coexisting magnetic structure of a mixed ferromagnetism and antiferromagnetism can provide a clue for this high T_{SC}. We discuss a theoretical model for its possible pairing symmetry and pairing mechanism.