When publishing results obtained with DFT-QE WaNo, please consider citing it.

DFT-QE

Let's start exploring your materials' properties with ease and precision! Welcome to the DFT-QE WaNo, which performs DFT calculations using the powerful and flexible Quantum Espresso code! Quantum Espresso is an open-source software package that can handle many systems, from small molecules to extended solids. It provides a wide range of exchange-correlation functionals. It can be used to perform various types of calculations, including ground state properties, electronic structure, and phonon calculations. With our WaNo, the pseudopotentials (SSSP Efficiency (version 1.1.2)) are automatically identified based on the chemical species specification. All input files are generated or loaded automatically after reading the geometry file in .cif format, making it easy for you to start.

1. Python Setup

To get this WaNo up and running on your available computational resources, make sure to have the below libraries installed on Python 3.6 or newer.

1. Atomic Simulation Environment (ASE).
2. Python Materials Genomics (Pymatgen).
3. Numpy, os, sys, re, yaml. 

2. DFT-QE files and Inputs

• SETUP tab: See the GUI of this WaNo. as an option. We can set the initial structure, Controls system, and KPOINTS.
• Properties tab: (:warning: The qe_results.yml database is replacing this tab. Check down below to see the available properties in the database!).

3. DFT-QE Output

• QEIN.out
  • This file contains vital information about the simulation of the system.
• Title.save
  • A folder containing the charge-density.dat, paw.txt, pseudo potentials, and all wfcdw .dat files.
• qe_results.yml
  • This database comprises all inputs in the rendered_wano.yml file as well a set of keys and values of the following properties: total_energy, potential_energy, kinetic_energy, cell, cell_lengths_and_angles, positions, forces, chemical_formula, chemical_symbols, center_of_mass, volume, temperature, all_distances, masses, atomic_numbers, global_number_of_atoms, initial_charges, band_gap, convergence, datetime, and user.

4. Running this WaNo

• Step 1. Move the DFT-QE folder to the WaNo directory.
• Step 2. Open Simstack on your compute and connect to your remote resource.
• Step 3. Drag the WaNo from the top left menu to the SimStack canvas as shown in Fig 1.
• Step 4. A double click on the WaNo will allow you to make the setups in the Input parameters.
• Step 5. Name your WaNo with Ctrl+S, and running it with Ctrl+R command.

Acknowledgements

This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No 957189. The project is part of BATTERY 2030+, the large-scale European research initiative for inventing the sustainable batteries of the future.

License & copyright

Developer: Celso Ricardo C. Rêgo, Multiscale Materials Modelling and Virtual Design, Institute of Nanotechnology, Karlsruhe Institute of Technology https://www.int.kit.edu/wenzel.php

Licensed under the KIT License.