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<div>Dear QE users,</div>
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<div>I am quite new to using Quantum Espresso. Apologies in advance for this very elementary question. </div>
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<div>I would like to do an scf calculation on a structure that has layers of different materials. For example, 7 layers of Cu in an fcc structure (100) surface, followed by two layers of CuN (100) surface. </div>
<div>I started by calculating bulk Cu and then bulk CuN. However, I could not find how to create layers without making a very large supercell that is 9 layers (7+2) thick. </div>
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<div>Is there another way for me to approach this problem that would allow me to use smaller unit cells? Or is the approach I mentioned above the recommended one?</div>
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<div>Again, I am sorry if this has been asked before; I have tried searching the archive, user guide and other sources but hadn't come across an answer. Many thanks in advance. </div>
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<div>Kind regards,</div>
<div>Sareh</div>
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<div>_____________________________</div>
<div>Sareh Heidari</div>
<div>PhD Student</div>
<div>London Centre for Nanotechnology</div>
<div>University College London</div>
<div>17-19 Gordon Street,</div>
<div>London, WC1H 0AH.</div>
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