期刊
PHYSICAL REVIEW B
卷 79, 期 24, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.79.241108
关键词
ferroelectric materials; metamaterials; permittivity; strontium compounds
资金
- Ministry of Education of the Czech Republic [LC-512]
- ASCR [A100100907]
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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