<div dir="ltr">Hi,<div>I want to compute Spontaneous polarization of ferroelectric, but I cannot find any commands to do this in cp2k, so I want to use Born effective charges to compute Spontaneous polarization, but I don't know which commands can be used. It's the <a href="https://manual.cp2k.org/cp2k-3_0-branch/CP2K_INPUT/FORCE_EVAL.html" style="font-family: monospace; text-transform: uppercase;">FORCE_EVAL</a><span style="color: rgb(0, 0, 0); font-family: monospace; text-transform: uppercase;">/</span><a href="https://manual.cp2k.org/cp2k-3_0-branch/CP2K_INPUT/FORCE_EVAL/PROPERTIES.html" style="font-family: monospace; text-transform: uppercase;">PROPERTIES</a><span style="color: rgb(0, 0, 0); font-family: monospace; text-transform: uppercase;">/</span><a href="https://manual.cp2k.org/cp2k-3_0-branch/CP2K_INPUT/FORCE_EVAL/PROPERTIES/FIT_CHARGE.html" style="font-family: monospace; text-transform: uppercase;">FIT_CHARGE</a> ??</div><div><br></div><div>Any ideas ?</div><div>Thanks,</div><div>Jiangsu Zhen</div></div>