Dear PWscf users and developer,<div><br></div><div>I am computing the diffusion barrier in simple metal system.</div><div>Can I fix the position of a (set of) particular atom during relaxation? which keyword are related to such input?</div>
<div><br></div><div>Thanks</div><div><br></div><div>regards</div><div>Nay Lin</div><div>Nanyang Technological University</div>