Abstract
We demonstrate experimentally and theoretically dielectric metamaterials exhibiting a tunable range of negative effective permeability in the terahertz spectral region (0.2–0.36 THz). Our structures consist of an array of intrinsically nonmagnetic rods made of an incipient ferroelectric which shows a high tunable permittivity. The magnetic response and its tuning are achieved by a temperature control of the permittivity of , which defines the resonant confinement of the electromagnetic field within the rods.
- Received 26 March 2009
DOI:https://doi.org/10.1103/PhysRevB.79.241108
©2009 American Physical Society