Journal
PHYSICAL REVIEW B
Volume 79, Issue 24, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.79.241108
Keywords
ferroelectric materials; metamaterials; permittivity; strontium compounds
Funding
- Ministry of Education of the Czech Republic [LC-512]
- ASCR [A100100907]
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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.
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