The physics and chemistry of heavy fermions.

Fisk, Z; Sarrao, J L; Smith, J L; Thompson, J D · Proc Natl Acad Sci U S A · 1995

basic_science · Level V

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Abstract

The heavy fermions are a subset of the f-electron intermetallic compounds straddling the magnetic/nonmagnetic boundary. Their low-temperature properties are characterized by an electronic energy scale of order 1-10 K. Among the low-temperature ground states observed in heavy fermion compounds are exotic superconductors and magnets, as well as unusual semiconductors. We review here the current experimental and theoretical understanding of these systems.