<div dir="ltr"><div>Hi Abid,</div><div><br></div><div>Your summary looks good. </div><div>(i) yes the total thickness</div><div>(ii) the thickness needs to be converted to centimeter to cancel the "cm" in (hbar/e)*S/cm</div><div><br></div><div>Best,</div><div>Junfeng Qiao</div><div>Doctoral Assistant<br>EPFL THEOS<br>Switzerland<br></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, May 3, 2021 at 4:36 PM Abid Rehman <<a href="mailto:rehmanustc@gmail.com">rehmanustc@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"> Dear
Qiao,<div>First of all thank you very much for your response and explanation provided. I understood your points. I summarized what you have said in the attached picture. Please have a look at whether it is ok or not. </div><div>I have further two supplementary confusions: (i) by "t<b>hickness along z"</b> you mean thickness of the slab (i.e, Sample thickness+Vacume thickness) ?</div><div>(ii) Normally th</div><img src="cid:ii_ko8pfjuc0" alt="picture.jpg" width="539" height="562"><br><div>e thickness of the slab is in the Angstrom unit in first-principle calculations,So should I take the thickness directly in the Angstrom unit or need to convert to cm.? </div><div>Thank You</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, 3 May 2021 at 17:19, Junfeng Qiao <<a href="mailto:qiao0junfeng@gmail.com" target="_blank">qiao0junfeng@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">Hi Abid,<br>
<br>
(hbar/e)*S/cm is the unit of SHC for 3D structures, e^2/h is the unit of AHC <br>
for 2D structures. If you are calculating SHC of a 2D structure by using a <br>
slab with vacuum, then you could first multiply the result by the thickness <br>
along z axis (assuming z axis is the direction normal to the slab plane, i.e. <br>
the total thickness of the slab and the vacuum), so now the unit is (hbar/<br>
e)*S. Secondly, multiply the result by (-2e/hbar) [i.e. "convert" a spin <br>
angular momentum (hbar/2) to a charge (-e)], now the unit is S. Since e^2/hbar <br>
~= 2.434e-4 S, it's easy to do the reverse and you get the unit in e^2/h.<br>
<br>
Best,<br>
Junfeng QIAO<br>
Doctoral Assistant<br>
EPFL THEOS<br>
Switzerland<br>
<br>
On Sunday, May 2, 2021 9:54:33 AM CEST Abid Rehman wrote:<br>
> Hi all,<br>
> As we know, The wannier90 gives Spin Hall conductivity in units of<br>
> *(hbar/e)*S/cm.<br>
> *I want to express the spin Hall conductivity in *e2**/h *unit. So how can<br>
> I convert the data from *(hbar/e)*S/cm *to* e2/h unit?*<br>
> Thanks<br>
<br>
<br>
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