Theoretical suggestion for experimental detection of magnetism in atomic clusters by photon scattering

We suggest that the large magnetic moments carried by atomic clusters of ma nganese (for example, 25 bohr magnetons for Mn-5 cluster) may be detected b y means of polarized optical spectroscopic methods even on a semiconducting substrate. Our estimate for the magnetic part of the cross section for Mn- 5 cluster is of the order of 10(-6), including possible resonance contribut ion from states near the highest occupied molecular orbital state of the cl uster. This appears to be well within the accuracy of current spectroscopic techniques. [S0163-1829(99)50402-5].