Superconductivity in Magnetically Ordered CeTe$_{1.82}$

Details Superconductivity in Magnetically Ordered CeTe$_{1.82}$ Superconductivity in Magnetically Ordered CeTe$_{1.82}$

2002-07-09

arxiv.org/abs/cond-mat/0207239v1

Physics

Condensed Matter

Strongly Correlated Electrons

13 pages, including 4 figures

Scientific paper

10.1103/PhysRevB.67.212504

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.

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