Abstract
In this study, magneto-optical properties of Rh nanostructures including nanocubes, nanomultipods, and nanotetrahedra, as promising candidates for UV plasmonics, are studied using magnetic circular dichroism (MCD) spectroscopy to obtain better insight into the characteristic absorption bump observed in the UV region. In any nanostructure, unexpectedly, the MCD responses are different from those ascribed to typical localized surface plasmon resonance (LSPR) behaviors in their sign and profile, indicating the distinct absence of LSPR signals. Simultaneous deconvolution of absorption and MCD suggests an appreciable contribution of size and/or morphology-dependent interband transitions of rhodium to their responses.
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