Research Progress on Ni-Based Antiperovskite Compounds
(Color online) Temperature-dependent resistivity of MgCNi2.8 [Reprinted with permission from H. -S. Lee et al., Adv. Mater. 19, 1807-1809 (2007)]. The sample with four metallic leads is shown in the upper inset. The lower inset shows a magnified view of near the superconducting transition.