Anharmonic Phonons
anharmonic phonons
phq: temperature dependent phonon quasiparticle dispersions of complex crystals from first principles. (https://github.com/mineralscloud/phq)
sscha: the stochastic self-consistent harmonic approximation: calculating vibrational properties of materials with full quantum and anharmonic effects. (https://sscha.eu/)
csld: a comprehensive package to study lattice dynamics from first-principles. the interatomic force constants were fitted using the compressive sensing algorithm. (https://github.com/llnl/csld)
aflow-aapl: automation of phonon calculations and thermal conductivity. (https://www.nature.com/articles/s41524-017-0046-7)
alamode: high-order force constants and self-consistent phonons. (https://alamode.readthedocs.io/)
almabte: boltzmann transport for device level simulations. (https://almabte.bitbucket.io/)
dynaphopy: anharmonic phonons from molecular dynamics simulations. (https://abelcarreras.github.io/dynaphopy/index.html)
d3q: 3-phonon processes and stochastic self-consistent phonons using random displacements. (https://anharmonic.github.io/)
phono3py: 3-phonon processesand thermal conductivity from finite-displacements. (https://phonopy.github.io/phono3py/)
scalid: self-consistent phonon approach, but no longer developed and fails for optic modes. (https://www.uquantchem.com/scaild.html)
shengbte: 3-phonon processes and thermal conductivity from finite-displacements. (https://www.shengbte.org/)
tdep: effective hamiltonian approach for anharmonic systems from molecular dynamics simulations. (https://ollehellman.github.io/)
openbte: an open source, parallel solver based on the phonon mean-free-path dependent boltzmann transport equation and heat diffusion equation, and it is interfaced to the most popular first-principles thermal conductivity solvers. (https://openbte.readthedocs.io/)
hiphive: hiphive is a tool for efficiently extracting high-order force constants from atomistic simulations, most commonly density functional theory calculations. it has been implemented in the form of a python library, which allows it to be readily integrated with many first-principles codes and analysis tools accessible in python. (https://hiphive.materialsmodeling.org/)
phonts: phonts is a lattice dynamics code that calculates thermal conductivity via the solution of the boltzmann transport equation (bte) for phonons.
kaldo:kaldo is a modern python-based software that implements both the boltzmann transport equation (bte) and the quasi-harmonic green kubo (qhgk) method, which runs on gpus and cpus using tensorflow. more details can be found on the kaldo website (https://github.com/nanotheorygroup/kaldo)
fourphonon:an extension module to shengbte for computing four-phonon scattering rates and thermal conductivity. (https://github.com/fourphonon)
[ Last edited by 漫天飄雪 on 2021-5-6 at 10:37 ]
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phonopy沒有考慮frequency shift
sscha的動力學矩陣就是一個二階相互作用力矩陣,差不多等同于聲子譜。frequency shift是在用Hessian擬合求解FC3之后,算spectral時候才考慮的。
那應該就更簡單了。cellconstructor模塊里面有直接獲得頻率以及極化的函數(shù),可以全部在python里面解決
,
是的。sscha團隊發(fā)superconduct的文章,掛名的好多都是軟件物理牛人,他們合作的不錯。
他們的方法基本上是目前最先進的,但是計算量莫名其妙的大,基本上算不動四階聲子相互作用力。
四階聲子相互作用力,計算量都挺大的。
相對來說,提取IFC還是問題不大的,但是sscha的速度實在是太慢了。