Dear all, <div><br></div><div>I am new to CP2K. want to use CP2K to do some MD simulations. I have heard that for CP2K if the cell is too small the may be issues with the basis functions. I did not get too much info from the official manual or CP2K papers. I want to know, </div><div><br></div><div>(1) if my system is liquid, I have PBC in 1, 2, or 3 direction(s), what would be the smallest OK size of the cell?</div><div><br></div><div>(2) if my system is crystallic, or metallic, and I have PBC in 1, 2, or 3 directions(s), what would be the smallest yet OK size of the cell? ( I know this would depend on lots of things, but any comment/suggestion would be helpful for a newbie).</div><div><br></div><div>Thanks. </div>
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