Abstract
In the field of plasmonics, noble metals such as Au or Ag have been frequently utilized due to their strong plasmon resonance features arising from the Drude-like property of sp-electrons. On the other hand, transition metals such as platinum-group metals (PGMs) are usually not considered as a plasmonic material because of their weak plasmon resonances damped by localized d-electrons. It is, however, known that transition metals exhibit various unique functionalities due to the d-electrons. Therefore, if such functionalities are combined with plasmonic nano-systems, plasmonics may be extended to various research fields and applications.
© 2014 Japan Society of Applied Physics, Optical Society of America
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