Tunable terahertz metamaterials with negative permeability
Physical Review B—Condensed Matter and Materials Physics, 2009•APS
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 SrTiO 3 which shows a high tunable permittivity. The magnetic
response and its tuning are achieved by a temperature control of the permittivity of SrTiO 3,
which defines the resonant confinement of the electromagnetic field within the rods.
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 SrTiO 3 which shows a high tunable permittivity. The magnetic
response and its tuning are achieved by a temperature control of the permittivity of SrTiO 3,
which defines the resonant confinement of the electromagnetic field within the rods.
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.
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