<html><head></head><body bgcolor="#FFFFFF"><div><br></div><blockquote type="cite"><div><br></div></blockquote><div></div><blockquote type="cite"><div><span class="Apple-style-span" style="font-family: arial, sans-serif; font-size: 13px; background-color: rgb(255, 255, 255); ">Hi, in the userguide, it says that "if LDA+U is used in an unrestricted, general way, it introduces an orbital field in the calculation". And it also recommends turning on spin-orbital interaction first and then slowly turn on LDA+U. <div>
<br></div><div>What does "an unrestricted, general way" mean?</div><div><br></div><div>The way I used to do LDA+U is to first generate structure file. Then initialize. Finally, I will edit case.indm and case.inorb according to my materials. Is it correct or not? Or should I always turn on spin orbit coupling?</div>
<div><br></div><div><br></div><div><br></div><div>Yundi</div></span></div></blockquote></body></html>