Feng, TianhuaXu, YiZhang, WeiMiroshnichenko, Andrey2021-07-072021-07-070031-9007http://hdl.handle.net/1885/238583We 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 technologyY. Xu thanks the financial support from National Natural Science Foundation of China (Grants No. 11674130 and No. 11304047); Natural Science Foundation of Guangdong Province, China (Grants No. 2016A030306016, No. 2014 A030313376).application/pdfen-AU© 2017 American Physical Society201710.1103/PhysRevLett.118.1739012020-11-23