Electronic structures of antiperovskite superconductors: MgXNi${}_3$ (X=B,C,N)

J. H. Shim, B. I. Min

We have investigated electronic structures of a newly discovered antiperovskite superconductor MgCNi${}_3$ and related compounds MgBNi${}_3$ and MgNNi${}_3$. In MgCNi${}_3$, a peak of very…