Questions tagged [cell-optimization]
For questions regarding optimizations of unit cell dimensions.
7
questions with no upvoted or accepted answers
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answers
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Strange change in total energy when lattice relaxing of EuTiO3 material and then atomic relaxing in a specific direction using Quantum Espresso
These days, I'm having a trouble in atomic relaxing of "EuTiO3" with tetragonal symmetry using Quantum espresso 7.1 for a period of more that a week. This material have a transverse optical ...
- 51
2
votes
0
answers
41
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Water simulation in ASE/LAMMPS
I want to simulate some water in MD with ASE and a LammpsLib calculator.
I set up a minimal Lammps calculator and I try to calculate the energy per atom of an isolated molecule, and a 3x3x3 supercell. ...
- 667
2
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Why the total energy calculated with GGA and metaGGA=SCAN are so different?
Why the total energy calculated with GGA and metaGGA=SCAN are so different?
My INNCAR file is
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- 21
2
votes
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answers
41
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Relaxation of a system with a different Forcefield
I have an amorphous silica surface system with 576 atoms which was generated using BKS forcefield. I would like to relax the system with Reaxff. To do that I use the fixes in lammps as,
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- 501
2
votes
0
answers
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Generating unit cell from an optimized molecule in Avogadro?
I am trying to generate the unit cell for a material from the optimized coordinates of a molecule. I am able to generate an orthorhombic unit cell from the coordinates using utilities in Avogadro. ...
- 2,762
1
vote
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answers
15
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Relax calculation in Wien2k
Can someone help me with the steps to take to perform Relax calculation of a structure in WIEN2k? Then further what to keep in mind while performing strain calculation on the structure for the relax ...
- 1,127
1
vote
0
answers
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Disappearing liaison when relaxing with Quantum ESPRESSO?
When I optimize the structure, the bonds between carbon atoms disappear, as shown in the figure. What could be the problem?
my input file
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- 371