The morphology, charge distribution and energetic stability of interfaces in the diamond/c-BN heteropolar junctions grown along [001] and [111] crystallographic directions are obtained from first principles calculations in the framework of density functional theory. It turns out that there exist reconstructions of the abrupt interfaces of the C and N adjacent layers (C-N type) that induce charge compensation and lead to the stabilization of the interfaces. On the contrary, our studies strongly suggest that analogous reconstructions of the abrupt interfaces of C and B adjacent layers (C-B type) are not energetically favorable and do not stabilize abrupt interfaces.
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