4
$\begingroup$

I know how to cleave surfaces with integer Miller indices, however I wonder how I could cleave a $(\sqrt{3} \times \sqrt{3}) R30$ reconstruction of $(001)\,\, 4H-SiC$.

I have found a nice link to O-lattice theory here, https://www.tf.uni-kiel.de/matwis/amat/def_en/kap_7/backbone/r7_3_1.html but I thought there might be a script out there for this purpose.

I am currently trying my chances with VESTA!

Thank you for your help, Roozbeh

$\endgroup$
4
$\begingroup$

The reconstructed $(\sqrt{3} \times \sqrt{3})R30$ surface unit cell can be obtained by first applying the rotation matrix

$ \begin{pmatrix} 1.0 & 2.0 & 0.0 \\ -1.0 & 1.0 & 0.0 \\ 0.0 & 0.0 & 1.0 \end{pmatrix}$

to the primitive bulk unit cell, and then the reconstructed $(001)$ surface can be cleaved from this unit cell, or the other way around.

top view of the primitive enter image description here

and reconstructed surface enter image description here

Cheers, Roozbeh

$\endgroup$

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.