Dear QE developers,<br> <br>how we can calculate the binding Energy for SiC bundle nanotubes?<br>the sum of total Energy of isolated nanotubes in unit cell - Total Energy of bundle nanotube,<br>Or<br>the sum of total energy of isolated Si and C atoms in unit cell - Total Energy of SiC bundle nanotube?<br>
<br>with regards,<br>khodadad <br>