DFT calculations for metal oxide semiconductors and graphene oxide

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Discussion Overview

The discussion revolves around the theoretical analysis of metal oxide semiconductors and graphene oxide using Density Functional Theory (DFT) calculations. Participants share resources and guidance for newcomers interested in performing DFT calculations to understand the electronic properties of materials like TiO2 and graphene oxide.

Discussion Character

  • Exploratory, Technical explanation, Homework-related

Main Points Raised

  • One participant seeks guidance on starting DFT calculations, asking for authentic books and websites with DFT codes.
  • Another participant clarifies the meaning of DFT, emphasizing it refers to Density Functional Theory rather than Discrete Fourier Transform.
  • Several participants mention specific DFT programs, such as AbInit and Quantum Espresso, noting that each has its own syntax and resources for tutorials.
  • One participant highlights the use of Quantum Espresso in conjunction with Atomic Simulation Environment (ASE) to simplify the setup of calculations, recommending tutorials as a good starting point.
  • Links to various resources, including tutorials and documentation for Quantum Espresso, are shared by participants to assist in learning DFT calculations.
  • One participant mentions a set of exercises for Quantum Espresso that they found helpful but is currently unable to locate.

Areas of Agreement / Disagreement

Participants generally agree on the usefulness of specific DFT programs and resources for learning, but there is no consensus on a single best approach or resource for newcomers.

Contextual Notes

Some limitations include the varying syntax and documentation quality of different DFT programs, as well as the potential for missing assumptions in the resources shared.

Azhar007
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TL;DR
I am doing experimental research on metal oxide semiconductors and graphene oxide, I also want to do some theoretical analysis.
I am doing experimental research on metal oxide semiconductors and graphene oxide, I also want to do some theoretical analysis. I am new in theoretical, so I need guidance how to proceed with the simple calculations, like DFT. Is there any authentic book with examples? and also is there any website with DFT calculations codes for understanding the electronic properties of metal oxide semiconductors (for example TiO2) and Graphene oxide? or any other suggestion how to initially proceed?
Thanks in advance!
 
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Each DFT program has its own syntax. For solid state, I’ve used AbInit and Quantum Espresso and both have links to good tutorials on their websites (QE’s documentation leaves something to be desired, though). QE also comes with a bevy of examples that give a good idea of how to put together input files. YouTube also is a pretty good resource for certain types of calculations with certain programs.
 
I've been using Quantum Espresso with Atomic Simulation Environment, which is a Python scripting tool which makes setting up QE runs a million times easier. When I started I worked through several tutorials and I would say that is the best way to start.

Some of these tutorials are great, like the NEB and surface diffusion:
https://wiki.fysik.dtu.dk/ase/tutorials/tutorials.html

I used this one too
https://blog.levilentz.com/band-diagram-tutorial-for-quantum-espresso/

There was an excellent set of exercises I used for QE but I cannot find them again, I'll update later if I find it.
 

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