Ideal Magnetic Dipole Scattering

Physical Review Letters
Tianhua FengAndrey E Miroshnichenko

Abstract

We introduce the concept of tunable ideal magnetic dipole scattering, where a nonmagnetic nanoparticle scatters light as a pure magnetic dipole. High refractive index subwavelength nanoparticles usually support both electric and magnetic dipole responses. Thus, to achieve ideal magnetic dipole scattering one has to suppress the electric dipole response. Such a possibility was recently demonstrated for the so-called anapole mode, which is associated with zero electric dipole scattering. By spectrally overlapping the magnetic dipole resonance with the anapole mode, we achieve ideal magnetic dipole scattering in the far field with tunable strong scattering resonances in the near infrared spectrum. We demonstrate that such a condition can be realized at least for two subwavelength geometries. One of them is a core-shell nanosphere consisting of a Au core and silicon shell. It can be also achieved in other geometries, including nanodisks, which are compatible with current nanofabrication technology.

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Citations

Jan 30, 2019·Nanotechnology·Yuanqing Yang, Sergey I Bozhevolnyi
Mar 19, 2019·Nanotechnology·Zhengqi LiuMulin Liu
Jul 7, 2018·Beilstein Journal of Nanotechnology·Aristeidis G Lamprianidis, Andrey E Miroshnichenko
Jan 30, 2018·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Tianhua FengYi Xu
Jul 29, 2018·Nature Communications·Chengyun ZhangAndrey E Miroshnichenko
Sep 29, 2018·Scientific Reports·Patrick J BradleyYang Hao
Dec 29, 2018·Nanomaterials·José Francisco AlgorriJosé Manuel Sánchez-Pena
Jun 17, 2020·Nature Communications·Tianyue ZhangXiangping Li
May 16, 2019·Scientific Reports·Yongsop Hwang, Jin-Kyu Yang
Feb 14, 2020·Scientific Reports·Barbara CappelloAlexey A Basharin
May 19, 2019·Scientific Reports·Dimitrios C ZografopoulosRomeo Beccherelli
Nov 25, 2018·Optics Express·Runmin LiZhongchao Wei
Nov 2, 2019·Optics Letters·Jeng Yi LeeRay-Kuang Lee
May 29, 2018·Optics Express·Mingcheng PanmaiSheng Lan
Mar 24, 2020·Physical Review Letters·John A ParkerUttam Manna
Feb 12, 2021·Nanomaterials·Reza Masoudian SaadabadAndrey E Miroshnichenko
Mar 25, 2021·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Jing LiHui Pan
Aug 1, 2019·The Journal of Physical Chemistry Letters·Kang DuTing Mei
Oct 8, 2021·Optics Express·Debdatta RayOlivier J F Martin

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