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--- graphene:electronic_structure [2010/02/27 11:25]
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+++ graphene:electronic_structure [2010/02/27 11:36]
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 === Procedure ===
-  - run 1 SCF to obtain the SCF charges;
+  - obtain the SCF charges
-  - fix SCF charges and use a set special high symmetry k-points
+  - generate a set of special high symmetry k-points
-  - run 1 step to get eigenvalue spectra
+  - get eigenvalue spectra with fixed SCF charges & the set of high symmetry k-points
-  - plot ''ek.dat'' file
+  - plot eigenvalue vs. k-points
 To plot the band structure we generated a set of the special k-points heading from K(1/√3,1/3) point to Γ(0,0) ending at M(0,2/3) stored in file C1.kgm.kpts.
+{{:graphene:band:bs_a2.46_sp.png|}}
+====== Real space electron denisty ======
+Another way to analyze the electronic structure of material is a plot of electron density in real space. This kind of analysis can be compared, with certain caution, with STM images. To obtain this image we have to proceed following steps:
+  - obtain the SCF charges
+  - plot wavefunction in real-space

Nanosurf Lab