Abstract
We demonstrate magneto-optical effects in silver nanoparticles with magnetic circular dichroism (MCD) spectroscopy. The MCD spectra show a derivative-like (splitting) signal in the localized surface plasmon absorption region. The observed magneto-optical (magnetoplasmonic) response can be due to the increase in the Lorentz force imparted on the collective electrons that move in left and right circular orbits in the nanoparticles. Importantly, simultaneous deconvolution analysis of UV–vis absorption and MCD spectra provides an accurate shift frequency (or cyclotron frequency) as well as bandwidths of these two magnetoplasmonic modes consistently. A very large cyclotron frequency is found in the surface magnetoplasmons under a magnetic field of 1.6T, suggesting an apparent enhancement of the local magnetic induction in the nanoparticles.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
