Single Spin Superconductivity

A spin-compensated half-metallic antiferromagnetic is shown to allow a new, type of superconductivity in which only one spin channel is superconducting. This $S=1\mathrm{}$ triplet pairing state that arises from a unique type of normal state will differ markedly from conventional, heavy fermion, or high temperature superconductors. Characteristics of such a state are outlined, and guidelines for making promising candidates are presented.