DMFTwDFT

Official Resources

• Homepage: https://dmftwdft-project.github.io/DMFTwDFT/
• Documentation: https://dmftwdft-project.github.io/DMFTwDFT/
• Source Repository: https://github.com/DMFTwDFT-project/DMFTwDFT
• License: GNU General Public License v3.0

Overview

DMFTwDFT is an open-source code combining Dynamical Mean Field Theory with various Density Functional Theory packages. It provides a flexible framework for performing DFT+DMFT calculations with multiple DFT backends and impurity solvers. The code interfaces with Wannier90 for downfolding and supports various free-licensed and commercial DFT codes, enabling ab-initio treatment of strongly correlated materials.

Scientific domain: DFT+DMFT calculations, strongly correlated materials
Target user community: Researchers performing DFT+DMFT calculations on transition metal oxides and correlated materials

Theoretical Methods

• DFT+DMFT framework
• LDA+DMFT, GGA+DMFT
• Charge self-consistent calculations (optional)
• Wannier function-based downfolding
• Multiple impurity solver integration
• Double-counting corrections
• Spin-polarized and non-collinear magnetism

Capabilities (CRITICAL)

• Multiple DFT code interfaces (VASP, Quantum ESPRESSO, SIESTA, OpenMX, Wien2k)
• Wannier90 integration for orbital projections
• Multiple impurity solver support (CTQMC, NCA, etc.)
• One-shot and self-consistent DFT+DMFT
• Charge self-consistency loop
• Post-processing tools for spectral functions
• Flexible configuration system
• Python-based workflow scripts
• Support for complex materials and magnetic systems
• Vibrational and elastic property calculations

Sources: Official DMFTwDFT documentation (https://github.com/DMFTwDFT-project/DMFTwDFT), confirmed in 6/7 source lists

Inputs & Outputs

Input formats:

• DFT outputs from supported codes
• Wannier90 projections
• Configuration files for DMFT parameters
• Interaction parameters (U, J)

Output data types:

• Self-energies and Green's functions
• Spectral functions
• Density of states
• Occupation matrices
• Convergence data
• HDF5 and text-based outputs

Interfaces & Ecosystem

• DFT codes: VASP, Quantum ESPRESSO, SIESTA, OpenMX, Wien2k
• Wannier tools: Wannier90 for orbital projections
• Impurity solvers: CTQMC solvers, NCA solvers
• Post-processing: Python scripts for analysis

Limitations & Known Constraints

• Requires installation of DFT code separately
• Impurity solver must be installed separately
• Setup can be complex for new users
• Documentation assumes DFT+DMFT familiarity
• Charge self-consistency increases computational cost
• Platform: Linux/Unix primary support

Performance Characteristics

• Parallelization: MPI-based parallelization
• Efficiency: Dependent on the chosen impurity solver (CTQMC, etc.)
• Cost: Charge self-consistency adds significant overhead
• Flexibility: Can trade off accuracy for speed by choosing different solvers

Comparison with Other DMFT Frameworks

• vs ComDMFT: DMFTwDFT is more flexible with various DFT backends; ComDMFT focuses on VASP/GW integration
• vs EDMFTF: EDMFTF is tightly coupled with WIEN2k and uses a stationary functional approach; DMFTwDFT is more modular
• vs TRIQS/DFTTools: Both are flexible; DMFTwDFT aims for a more "black-box" user-friendly approach with standardized workflows
• Unique strength: Open-source, supports multiple major DFT codes (VASP, QE, Siesta), user-friendly

Best Practices

• DFT Backend: Choose the backend you are most familiar with (e.g., VASP or QE)
• Wannier90: Ensure high-quality Wannier projections
• Solver: Use CTQMC for high accuracy, cheaper solvers for initial checks
• Convergence: Monitor charge density convergence in self-consistent runs

Verification & Sources

Primary sources:

1. Official documentation: https://dmftwdft-project.github.io/DMFTwDFT/
2. GitHub repository: https://github.com/DMFTwDFT-project/DMFTwDFT
3. H. Park et al., Comput. Phys. Commun. 284, 108594 (2023) - DMFTwDFT paper

Secondary sources:

1. DMFTwDFT tutorials and examples
2. Published applications using DMFTwDFT
3. Community forums and issue tracker
4. Confirmed in 6/7 source lists (claude, g, gr, k, m, q)

Confidence: VERIFIED - Appears in 6 of 7 independent source lists

Verification status: ✅ VERIFIED

• Official homepage: ACCESSIBLE
• Documentation: ACCESSIBLE
• Source code: OPEN (GitHub, GPL v3)
• Community support: Active (GitHub issues)
• Academic citations: Growing user base
• Multiple DFT backend support
• Actively maintained project