Papers › Interface tool from Wannier90 to RESPACK: wan2respack
Interface tool from Wannier90 to RESPACK: wan2respack
Kensuke Kurita, Takahiro Misawa, Kazuyoshi Yoshimi, Kota Ido, Takashi Koretsune
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We develop the interface tool $\verb|wan2respack|$, which connects $\verb|RESPACK|$ (software that derives the low-energy effective Hamiltonians of solids) with $\verb|Wannier90|$ (software that constructs Wannier functions). $\verb|wan2respack|$ converts the Wannier functions obtained by $\verb|Wannier90|$ into those used in $\verb|RESPACK|$, which is then used to derive the low-energy effective Hamiltonians of solids. In this paper, we explain the basic usage of $\verb|wan2respack|$ and show its application to standard compounds of correlated materials, namely, the correlated metal SrVO₃ and the high-T_c superconductor La₂CuO₄. Furthermore, we compare the low-energy effective Hamiltonians of these compounds using Wannier functions obtained by $\verb|Wannier90|$ and those obtained by $\verb|RESPACK|$. We confirm that both types of Wannier functions give the same Hamiltonians. This benchmark comparison demonstrates that $\verb|wan2respack|$ correctly converts Wannier functions in the $\verb|Wannier90|$ format into those in the $\verb|RESPACK|$ format.
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