We present an open-source software package WIENJ, a software to estimate magnetic interactions based on combining magnetic force theorem and linear-response approach. As an interface to the linearized augmented plane wave (LAPW) software Wien2k, the software allows to friendly and efficiently calculate anisotropic spin Hamiltonian parameters, including Heisenberg interaction, antisymmetric Dzyaloshinskii-Moriya (DM) interaction and symmetric Gamma term.
https://github.com/diwang0214/WienJ
See userguide.pdf in the package.
If you use our code for your research, please cite
Di Wang, Xiangyan Bo, Feng Tang, Xiangang Wan, arXiv:2212.13963
Please report bugs to diwang0214@nju.edu.cn.