Observation of Magnetic-Field-Induced Superconductivity in a Heavy-Fermion Antiferromagnet: CePb3

Abstract

We report here an entirely new phenomenon, namely magnetic-field-induced superconductivity in Ce${\mathrm{Pb}}_3$, a system which at zero field is a heavy-fermion antiferromagnet. This phenomenon is novel in several respects. It is the first reported heavy-fermion magnetic-field-induced superconductor. It is also the first reported magnetic-field-induced superconductor that is also an antiferromagnet. Moreover, it has the simplest crystal structure, ${\mathrm{Cu}}_3$Au, of any known heavy-fermion or magnetic-field-induced superconductor.