Electronic and Magnetic Properties of Stoichiometric CeAuBi

We report the electronic and magnetic properties of stoichiometric CeAuBi single crystals. At ambient pressure, CeAuBi orders antiferromagnetically below a Néel temperature ( ) of 19 K. Neutron diffraction experiments revealed an antiferromagnetic propagation vector , which doubles the paramagnetic unit cell along the axis. At low temperatures several metamagnetic transitions are induced by the application of fields parallel to the axis, suggesting that the magnetic structure of CeAuBi changes as a function of field. At low temperatures, a linear positive magnetoresistance may indicate the presence of band crossings near the Fermi level. Finally, the application of external pressure favors the antiferromagnetic state, indicating that the 4 electrons become more localized.