<DIV class=MsoNormal style="MARGIN: 0cm 0cm 0pt; DIRECTION: ltr; LINE-HEIGHT: 14.4pt; unicode-bidi: embed; TEXT-ALIGN: left"><FONT face=arial><SPAN style="COLOR: #333333; FONT-FAMILY: Arial">Dear wien users,</SPAN><SPAN style="FONT-SIZE: 10pt; COLOR: #333333; FONT-FAMILY: Arial"></SPAN></FONT></DIV> <DIV class=MsoNormal style="MARGIN: 0cm 0cm 0pt; DIRECTION: ltr; LINE-HEIGHT: 14.4pt; unicode-bidi: embed; TEXT-ALIGN: left"><SPAN style="COLOR: #333333; FONT-FAMILY: Arial"><FONT face=arial>Hi, </FONT></SPAN><SPAN style="COLOR: #333333; FONT-FAMILY: Arial"><FONT face=arial>For run scf of CNTs how should we select k-mesh? should we always select 1 k-mesh in b and c directions? why?</FONT></SPAN></DIV> <DIV class=MsoNormal style="MARGIN: 0cm 0cm 0pt; DIRECTION: ltr; LINE-HEIGHT: 14.4pt; unicode-bidi: embed; TEXT-ALIGN: left"><SPAN style="COLOR: #333333; FONT-FAMILY: Arial"><FONT face=arial>How many k-points should be used? do number of k-point must be low?
why?</FONT></SPAN></DIV> <DIV class=MsoNormal style="MARGIN: 0cm 0cm 0pt; DIRECTION: ltr; LINE-HEIGHT: 14.4pt; unicode-bidi: embed; TEXT-ALIGN: left"><SPAN style="FONT-SIZE: 10pt; COLOR: #333333; FONT-FAMILY: Arial"><FONT face=arial></FONT></SPAN></DIV> <DIV class=MsoNormal style="MARGIN: 0cm 0cm 0pt; DIRECTION: ltr; LINE-HEIGHT: 14.4pt; unicode-bidi: embed; TEXT-ALIGN: left"><FONT face=arial><SPAN style="COLOR: #333333; FONT-FAMILY: Arial"></SPAN><SPAN style="FONT-SIZE: 10pt; COLOR: #333333; FONT-FAMILY: Arial"></SPAN></FONT></DIV> <DIV class=MsoNormal style="MARGIN: 0cm 0cm 0pt; DIRECTION: ltr; LINE-HEIGHT: 14.4pt; unicode-bidi: embed; TEXT-ALIGN: left"><FONT face=arial><SPAN style="COLOR: #333333; FONT-FAMILY: Arial"></SPAN><SPAN style="FONT-SIZE: 10pt; COLOR: #333333; FONT-FAMILY: Arial"></SPAN></FONT></DIV> <DIV class=MsoNormal style="MARGIN: 0cm 0cm 0pt; DIRECTION: ltr; LINE-HEIGHT: 14.4pt; unicode-bidi: embed; TEXT-ALIGN: left"><SPAN style="COLOR: #333333;
FONT-FAMILY: Arial"><FONT face=arial>Best regards,</FONT></SPAN></DIV><p> 
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