Metamagnetics with rainbow colors

Wenshan Cai, Purdue University - Main Campus
Uday K. Chettiar, Purdue University
Hsiao-Kuan Yuan, Purdue University - Main Campus
Vashista C. de Silva, Purdue University
Alexander V. Kildishev, Birck Nanotechnology Center, Purdue University
V. P. Drachev, Birck Nanotechnology Center, School of Electrical and Computer Engineering, Purdue University
V. M. Shalaev, Birck Nanotechnology Center and School of Electrical and Computer Engineering, Purdue University

Abstract

A family of coupled nanostrips with varying dimensions is demonstrated exhibiting optical magnetic responses across the whole visible spectrum, from red to blue. We refer to such a phenomenon as rainbow magnetism. The experimental and analytical studies of such structures provide us with a universal building block and a general recipe for producing controllable optical magnetism for various practical implementations.