woohyunhan/phonontb

Construct phonon tight-binding model and calculate its topological properties

phononTB

This is Tight-binding code for phonon

1. Model Hamiltonian (bulk phonon band, edge phonon band, phonon DOS, Willson's loop, Berry curvature, Berry phase, implementation TRS breaking terms, visulization with v_sim, extract TB parameters from PHONOPY...)
2. Read Force constants from phonopy combined with other first-principles calculation codes such as VASP and Quantum Espresso
3. To be implemented: Non-equilibrium Green Function (NEGF), phonon-phonon interactions, atomic projected phonon DOS
4. Under development, Not released verison (contact info : [email protected] or [email protected])

Reference

1. Hamiltonian for phonons: https://link.aps.org/doi/10.1103/PhysRevB.96.064106
2. phononTB: W.H. Han and K.J. Chang, “Quantum Spin Hall-like Phononic States in van der Waals Bilayers with Antiferromagnetic Ordering”, arXiv (2019)

History

1. ~2018.2: Construct TB model & topological quantities
2. 2018.4: Edge states
3. 2018.5: Visualization via v_sim
4. 2018.6: Read_FC_from_phonopy