ß C₃N₄ -- ß Si₃N₄ Interface

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Before Geometry Relaxation

Use the mouse to rotate	Red arrows indicate forces. (Click for a bigger image)

Carbon

Silicon

Nitrogen

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After Geometry Relaxation

Use the mouse to rotate	Red arrows indicate forces. (Click for a bigger image)

Carbon

Silicon

Nitrogen

Note that the bottom two layers are frozen at the bulk geometry. Therefore, forces on them remains unchanged after the relaxation.

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Valence Electron Density (Isodensity Plot)