Questions tagged [periodic-boundary-conditions]

Questions regarding periodic boundary conditions in materials.

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8
votes
1answer
70 views

Periodic Boundary Conditions in Atomistic Simulation Environment

Consider the following atoms object. atoms_al = ase.build.fcc111('Al', size=(1,2,2), vacuum=16.0, orthogonal=True) To set the periodic boundary conditions along the ...
7
votes
1answer
58 views

How to discard molecules at the boundary in the Atomic Simulation Environment (ASE)?

When building a supercell for a molecular crystal with the Atomic Simulation Environment, it seems that the program takes into account periodic boundary conditions when replicating the unit cell. How ...
13
votes
1answer
149 views

Minimum image convention for non-orthorhombic unit cells

I am trying to take into account periodic boundary conditions for non-orthorhombic unit cells. I have the atomic coordinates for a monoclinic super cell with the following lattice vectors output by ...
5
votes
0answers
40 views

Kinetic energy cut-off for Gaussian-type orbitals when applying periodic boundary conditions [duplicate]

I have a solid with PBC (periodic boundary conditions) and I want to perform a DFT simulation. I use GTO as the basis. In a paper I read, I can transform the GTO to a Bloch function (crystalline ...
7
votes
0answers
50 views

CP2K Spherical Cell [closed]

I'm trying to run a gas phase cluster calculation in CP2K. I want to create an outside force to constrain water molecules that are in the simulation within a radius of a central ion. I want to create ...
11
votes
2answers
357 views

How to include individual PBC box dimensions in xyz file format compatible with VMD

I am using ASE to write an xyz file. Each frame in the file has a different PBC (periodic boundary condition). Currently, a frame starts like this: ...
11
votes
2answers
345 views

Recalculate atom positions to account for periodic boundary conditions

I have the output of a simulation done using Periodic boundary conditions (PBC), however, the atom positions have been resolved, i.e. there are atoms outside the PBC-box now. Is there a software/...
11
votes
1answer
79 views

What is the meaning of periodic boundary condition for molecular systems?

Reading some Gaussian related documents (inputs, manuals, books), I found the possibility to setup periodic boundary conditions (PBC) in Gaussian. As Gaussian is developed only for molecular systems ...