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exercise:simple_stm [2014/05/09 09:30] dpasseroneexercise:2014_ethz_mmm:simple_stm [2014/10/15 13:34] oschuett
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 We will show how a simple change in the termination (1 vs. 2 Hydrogens) changes the state structure completely. We will show how a simple change in the termination (1 vs. 2 Hydrogens) changes the state structure completely.
  
-{{ :exercise:2rib.jpg?direct&300 |}}+{{ 2rib.jpg?direct&300 |}}
 <note tip> <note tip>
 You should run these calculations on 16 nodes with ''bsub -n 16'' You should run these calculations on 16 nodes with ''bsub -n 16''
-Copy, as usual, the files from the directory **/cluster/home03/matl/danielep/LECTURE10/EXERCISE_10.2** (and later here on the media manager).+Download, as usual, the files from the media manager: {{exercise_10.2.tar.gz|}}. The 1h.1.5.inp file is **commented**).
 </note> </note>
  
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 <code> <code>
     &PRINT     &PRINT
 +! controls the printing of cubes for the generation of STM images.
     &STM     &STM
 +! set of sample bias
 +! negative for occupied states and positive for unoccupied states
       BIAS -2.0 -1.0 1.0 2.0       BIAS -2.0 -1.0 1.0 2.0
 +! orbital symmetry of the tip
 +! The change in the tip symmetry can radically alter the contrast of the topographic
 +! image due to changes in tip-surface overlap
       TH_TORB S       TH_TORB S
     &END STM     &END STM
 +! print molecular orbitals
     &MO_CUBES     &MO_CUBES
 +! 10 occupied orbitals
        NHOMO 10        NHOMO 10
 +! 10 unoccupied orbitals
        NLUMO 10        NLUMO 10
 +! limit the size of cube files
        STRIDE 2 2 2        STRIDE 2 2 2
        WRITE_CUBE T        WRITE_CUBE T
     &END     &END
 +! a cube file with eletrostatic potential generated by the total density (electrons+ions).
     &V_HARTREE_CUBE     &V_HARTREE_CUBE
     &END     &END
  
       &MO       &MO
 +! molecular orbitals eigenvalues and molecular ocuupations after each scf
        FILENAME EIG        FILENAME EIG
 +! add the last iteration with description
        ADD_LAST NUMERIC        ADD_LAST NUMERIC
 +! printing of eigenvalues of molecular orbitals
        EIGENVALUES        EIGENVALUES
 +! also print occupation of the molecular orbitals
        OCCUPATION_NUMBERS        OCCUPATION_NUMBERS
       &END       &END
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 <code> <code>
 Run the program in the following way: Run the program in the following way:
 +$ module load boost/1.54.0
 +$ module load mkl
 $ stm -c 2h*STM*.cube --isovalues 1E-5 > stm.out $ stm -c 2h*STM*.cube --isovalues 1E-5 > stm.out
 </code>  </code> 
exercises/2014_ethz_mmm/simple_stm.txt · Last modified: 2020/08/21 10:15 by 127.0.0.1