Strong magnetic response of submicron Silicon particles in the infrared

High-permittivity dielectric particles with resonant magnetic properties are being explored as constitutive elements of new metamaterials and devices. Magnetic properties of low-loss dielectric nanoparticles in the visible or infrared are not expected due to intrinsic low refractive index of optical media in these regimes. Here we analyze the dipolar electric and magnetic response of lossless dielectric spheres made of moderate permittivity materials. For low material refractive index (

• NS
  National Science Foundation
• CD
  Comunidad de Madrid

  Awards: S2009/TIC-1476, S2009/MAT-1756
• SN
  Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung

  Awards: 214107, 126772, 117762
• MD
  Ministerio de Ciencia e Innovación

  Award: CSD2007-00046