1. Precursor State to Unconventional Superconductivity in CeIrIn5
- Author
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Nair, Sunil, Wirth, S, Nicklas, M, Sarrao, JL, Thompson, JD, Fisk, Z, and Steglich, F
- Subjects
cond-mat.str-el ,cond-mat.supr-con ,Mathematical Sciences ,Physical Sciences ,Engineering ,General Physics - Abstract
We present Hall effect and magnetoresistance measurements in the heavy fermion superconductor CeIrIn(5). At low temperature, a Kondo coherent state is established. Deviations from Kohler's rule and a quadratic temperature dependence of the cotangent of the Hall angle are reminiscent of properties observed in the high-temperature superconducting cuprates. A striking observation pertains to the presence of a precursor state--characterized by a change in the Hall mobility--that precedes the superconductivity in this material, in similarity to the pseudogap in the cuprate superconductors.
- Published
- 2008