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Proceedings of the National Academy of Sciences of the United States of America logoLink to Proceedings of the National Academy of Sciences of the United States of America
. 1993 Oct 15;90(20):9664–9667. doi: 10.1073/pnas.90.20.9664

Soft x-ray magnetic circular dichroism: a probe for studying paramagnetic bioinorganic systems.

J van Elp 1, S J George 1, J Chen 1, G Peng 1, C T Chen 1, L H Tjeng 1, G Meigs 1, H J Lin 1, Z H Zhou 1, M W Adams 1, et al.
PMCID: PMC47630  PMID: 8415759

Abstract

Soft x-ray magnetic circular dichroism was used to study a paramagnetic bioinogranic system. We measured the Fe L edges of Pyrococcus furiosus rubredoxin, using circularly polarized synchrotron radiation, a split-coil super-conducting magnet, low sample temperatures, and fluorescence detection. The observed dichroism effect is strong (30%) and in general agreement with the calculation. The method is element- and oxidation state-specific, and the data can be interpreted by established theoretical procedures. Soft x-ray magnetic circular dichroism demonstrates enormous potential as a probe for studying paramagnetic systems in biology, chemistry, and material science.

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Selected References

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