[CP2K-user] [CP2K:18396] NEB-CI Distances rep too large

nat zip natzip8001 at gmail.com
Sun Jan 29 18:13:10 UTC 2023


Hello CP2K users,

I am doing a fluoride ion transport NEB-CI calculation with 2x2x2 LaF3, a 
known fluoride ion conductor. The calculation runs, but the distances 
between the replicas are larger than the length of the ion transfer in 
question (the distance between the two fluoride atoms is only 2.79 Å). The 
energy differences are also very high (up to 5.5eV below).
 *******************************************************************************
 BAND TYPE                     =                                         
 CI-NEB
 BAND TYPE OPTIMIZATION        =                                           
 DIIS
 STEP NUMBER                   =                                           
   46
 NUMBER OF NEB REPLICA         =                                           
    6
 DISTANCES REP =        2.425611        3.015968        4.084716       
 3.955761
                        4.362458
 ENERGIES [au] =    -5003.850194    -5003.807430    -5003.704672   
 -5003.685870
                    -5003.696118    -5003.835012
 BAND TOTAL ENERGY [au]        =                           
-30022.53790402270897
 *******************************************************************************
Any help with this would be appreciated.

Thanks,
Kyle

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