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</style>Thank you Mr. Ceresoli for your fast reply.<br />I'm so sorry for not being able to calculate the NMR shift for metallic system using PWSCF.<br /><br />But, I found your paper (Int. J. Quant. Chem. 2009, 109, 3336.), <br />where you calculated the NMR shift for the metallic system like graphene or graphite,<br />and you didn't include the Knight shift.<br /><br />1) so, I thought that it is possible to calculate the NMR shift for metallic systems using PWSCF,<br /> though it is not considering the Knight shift. Am I right?<br /> (cf. in the case of the Castep code where the same theory (GIPAW) is implemented,<br /> I could not perform such calculations for the system with fractional occupation number<br /> ,that is to say, metallic systems.)<br /><br />2) If I'm right, is it meaningful to calculate the NMR shift for metallic system without the Knight shift?<br /> I'm asking this question cause, as far as I know, the Knight shift is much larger than chemical shift.<br /><br />3) lastly, Is it possible to calculate the NMR shift for the paramagnetic system using PWSCF?<br /> (maybe, spin-polarized calculations for the NMR shift.)<br /> <br />Sorry for too many questions.<br />And thank you very much, Mr. Ceresoli.<br /><br />Best regards,<br />Choi.<br />===========================================================================================<br />
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