Dear users/developers,

Is it possible to perform variable cell optimizations with spin-orbit
coupling (SOC) in version 4.1.5?

Does the warning message below imply that SOC shouldn't be used in version
4.1.5 (especially for strongly localized d & f electron systems):

*"This spin-orbit implementation uses a local approximation. From 4.2 and
onwards the full non-local approximation is implemented. You are strongly
advised to use >=4.2 versions!"*

I would like to ask the developers: (i) when will a version with fully
functioning SOC will be released? (ii) Is the current implementation of SOC
suitable for variable cell calculations in systems with strong SOC effects?

Thank you very much in advance!
SIESTA is supported by the Spanish Research Agency (AEI) and by the European 
H2020 MaX Centre of Excellence (

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