Charge Transfer at the Ni₃InN/SrVO₃ Heterointerfaces

Heterointerfaces have been pivotal in unveiling extraordinary interfacial properties and enabling multifunctional material platforms. Despite extensive research on all-oxide interfaces, heterointerfaces between different material classes, such as oxides and nitrides, remain underexplored. Here we present the fabrication of atomically sharp heterointerfaces between antiperovskite Ni_3InN and perovskite SrVO_3. Leveraging layer-resolved scanning transmission electron microscopy and electron energy loss spectroscopy, we identified pronounced charge transfer across the well-ordered interface. First-principles calculations confirmed our experimental observations and further predicted an emergent magnetic moment within the Ni_3InN layer due to the charge transfer. These findings pave the way for novel electronic and spintronic applications by enabling tunable interfacial properties in nitride/oxide systems.