Superconductivity in a Metal/Quantum Dimer Heterostructure*

Recently we we proposed a new approach to engineering exotic superconductors based on a metal/quantum spin ice heterostructure. However, pyrochlore materials are difficult to grow and current models of their spin fluctuation spectra remain incomplete. In contrast, weakly-interacting spin dimer compounds such as Ba3Mn2O8 are experimentally tractable and their spin correlations can be calculated explicitly. In this work we focus on a new example of such a setup, the spin dimer compound Ba3Mn2O8 in heterostructure with electron-doped Ba3Sb2O8, and predict interfacial p+ip pairing at a few Kelvin. We also provide criteria for materializing the heterostructure using ab initio calculations. Hence we present a concrete proposal based on a controlled calculation predicting p+ip superconductivity in a metal/quantum dimer heterostructure.