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Exceptionally high Verdet constant in gold nanodisc arrays

Year: 2026
Type: article
Abstract: , corresponding to a Faraday rotation of -0.15° at a 1 T magnetic field. This Verdet constant represents a 15-fold enhancement over a continuous, unpatterned gold film of the same thickness measured under identical conditions and is highly competitive with many plasmon-enhanced diamagnetic nanostructures. Numerical simulations show that the magnetic field independent rotation is due to structure imperfections and thus with better tolerance in nanofabrication, one could get much higher absolute Faraday rotation at these resonances. These findings offer new opportunities for harnessing strong magneto-plasmonic effects in optoelectronic devices by patterning non-magnetic metal contacts.
DOI: 10.1039/d6na00610h
Authors: Gajendra Mulay, Shraddha Choudhary, Ashwin A. Tulapurkar, Daria O. Ignatyeva, Vladimir I. Belotelov, Shriganesh S. Prabhu, Venu Gopal Achanta
Institutions: Tata Institute of Fundamental Research, Indian Institute of Technology Bombay, University of Münster, CeNTech, Lomonosov Moscow State University, Council of Scientific and Industrial Research, CSIR National Physical Laboratory of India
Language: English
Open Access status: gold
Estimated APC paid: $1,962
OpenAlex ID: W4417086822
FWCI:
Cites: 53
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Related to: 10