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Fitting of EPR with SOC and CF Parameters

Posted: Tue Jun 11, 2024 10:16 pm
by ahand3

Hello,

I would like some guidance on fitting EPR spectra with spin-orbit coupling (SOC), crystal field (CF), and g. Can esfit with pepper accomplish this task?

Context: I have a molecular magnet system with suspected unquenched spin-orbit coupling. I also believe standard zero-field splitting (ZFS) parameters D and E cannot be applied, what are the appropriate anisotropy/ crystal field parameters to use?

An example Matlab script would be useful.

Best,
Adam


Re: Fitting of EPR with SOC and CF Parameters

Posted: Wed Jun 12, 2024 10:03 pm
by Stefan Stoll

Adam, this is possible. Check out the least-squares fitting examples and the associated user guide to see how to use esfit. Regarding angular momentum, SOC, and crystal field parameters, see the documentation on spin systems.