(Heyd-Scuseria-Ernzerhof, 2006) is the "Goldilocks" solution. It is a screened hybrid functional that mixes a portion of exact (Hartree-Fock) exchange with PBE exchange. It has become the standard method in solid-state physics for calculating accurate electronic structures, band gaps, and defect levels without the computational cost of many-body perturbation theory (GW).
HSE06 often oscillates. Use these stabilizers:
The combination of HSE06 and VASP indicates that someone is likely performing high-level DFT calculations using the VASP software package with the HSE06 functional.
To run an HSE06 calculation in VASP, you do not need to compile a special version (as was required in older versions), but you must set specific flags in your INCAR file.
HSE06 gives a gap, but it's not matching experiment.
In this post, I’ll break down what HSE06 is, how to set it up in VASP, and when it’s actually worth the pain.
If your system has less than 50 atoms and you care about the band gap to 0.1 eV accuracy, pay the cost. If you're studying a metal or a giant interface, stick with PBE+U.
HSE06 is the computational chemist's best friend for band gaps, but it demands respect. Use it wisely, parallelize aggressively, and always start from a PBE solution.
If you are submitting your first HSE06 job, check this list:
(Heyd-Scuseria-Ernzerhof, 2006) is the "Goldilocks" solution. It is a screened hybrid functional that mixes a portion of exact (Hartree-Fock) exchange with PBE exchange. It has become the standard method in solid-state physics for calculating accurate electronic structures, band gaps, and defect levels without the computational cost of many-body perturbation theory (GW).
HSE06 often oscillates. Use these stabilizers:
The combination of HSE06 and VASP indicates that someone is likely performing high-level DFT calculations using the VASP software package with the HSE06 functional. hse06 vasp
To run an HSE06 calculation in VASP, you do not need to compile a special version (as was required in older versions), but you must set specific flags in your INCAR file.
HSE06 gives a gap, but it's not matching experiment. (Heyd-Scuseria-Ernzerhof, 2006) is the "Goldilocks" solution
In this post, I’ll break down what HSE06 is, how to set it up in VASP, and when it’s actually worth the pain.
If your system has less than 50 atoms and you care about the band gap to 0.1 eV accuracy, pay the cost. If you're studying a metal or a giant interface, stick with PBE+U. HSE06 often oscillates
HSE06 is the computational chemist's best friend for band gaps, but it demands respect. Use it wisely, parallelize aggressively, and always start from a PBE solution.
If you are submitting your first HSE06 job, check this list: