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exercises:2018_ethz_mmm:stm_2018 [2018/05/10 12:59] dpasseroneexercises:2018_ethz_mmm:stm_2018 [2018/05/10 17:22] dpasserone
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 =====Simulation of STM and AFM images for two short graphene nanoribbons with different chemical termination===== =====Simulation of STM and AFM images for two short graphene nanoribbons with different chemical termination=====
-download from the tar file exercise_10.tar, move the file to your exercise directory, and extract the content+<note warning> 
 +In case you do not want to use the quantum-mobile VM, you will need to install the asetk and ProbeParticle packages: 
 +<code> 
 +git clone https://github.com/ltalirz/asetk 
 +pip install -e asetk 
 +</code> 
 +and 
 +<code> 
 +git clone https://github.com/ProkopHapala/ProbeParticleModel.git 
 +cd ProbeParticleModel/ 
 +git checkout dev 
 +</code> 
 + 
 +</note> 
 +download from [[https://polybox.ethz.ch/index.php/s/CH5VdcI40YdELez|here]] the tar file exercise_10.tar, move the file to your exercise directory, and extract the content 
  
-connect to hypatia: 
 <code> <code>
 tar -xvf exercise_10.tar tar -xvf exercise_10.tar
Line 80: Line 94:
 </code> </code>
 The program will compute the 4 highest occupied and 4 lowest unoccupied KS orbitals. The program will compute the 4 highest occupied and 4 lowest unoccupied KS orbitals.
-visualize the orbitals with VMD+Visualize the orbitals with VMD (remember **+** and **-**)
  
  
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 Now we can simulate for the same ribbon a nc-AFM image: Now we can simulate for the same ribbon a nc-AFM image:
 <note important> <note important>
-Go the the AFM directory of TASK_1 +Go the the AFM directory of TASK_1 (and have a look to the parameter file params.ini) 
-copy there the p.xyz file that you have  in the STM directory+copy there the p.xyz file that you havein the STM directory
 and execute: and execute:
  
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 The file p.xyz in teh STM directory should look similar to: The file p.xyz in teh STM directory should look similar to:
 <code> <code>
-222 +     78  
-    + i =       49, E =      -140.2738100175 
-  C1        6.0848407282        7.8280098155       21.6125989354 +  H         4.2914607718       10.2130614763       21.2815435017 
-  C1        6.0865671686       12.7633436664       21.6071222309 +  H         4.2778729017        7.7509218987       21.2954986738 
-  C1        6.1020007836       10.2957686990       21.6036624306 +  H         4.2782723704       12.6751364096       21.2955091278 
-  C2       56.3447906713       10.2958157091       21.6033852713 +  C         7.4704758534        6.5236639413       21.2352922076 
-  C2       56.3619529363        7.8280149623       21.6128774460 +  . 
-  C2       56.3601930737       12.7634261117       21.6063533886 +  . 
-  H         4.9837063610        7.8327959357       21.5912164696 +  . 
-  H         4.9855872642       12.7623732365       21.5844580428+  C1        5.3788157746        7.7465647443       21.2687198580 
 +  . 
 +  . 
 +  C1        5.3936844253       10.2129317839       21.2797918647 
 +  . 
 +  . 
 +  C1        5.3792136407       12.6792819903       21.2687263656 
 +  . 
 +  . 
 +  . 
 +  C2       21.1530397078        7.7456205579       21.2687376504 
 +  . 
 +  C2       21.1385072480       10.2118877383       21.2797955201 
 +  . 
 +  C2       21.1533012965       12.6781430186       21.2687326678 
 +  . 
 +  . 
 +  
 </code> </code>
  
 </note> </note>
  
 +<note important>
 +Look at the KS orbitals (especially HOMO and LUMO) for both spin UP and DOWN
 +</note>
 <note important> <note important>
 Notice the difference between the images in TASK_2 and the images in TASK_1 Notice the difference between the images in TASK_2 and the images in TASK_1
exercises/2018_ethz_mmm/stm_2018.txt · Last modified: 2020/08/21 10:15 by 127.0.0.1