Magnetization of left-handed metamaterials
TL;DR: In this paper, the ponderomotive interaction between a high-frequency modulated amplitude electric field and low-frequency potential distributions leads to spontaneous generation of magnetic fields, whose form and properties are discussed.
Abstract: We propose a possible mechanism for the generation of magnetic fields in negative refraction index composite metamaterials. Considering the propagation of a high-frequency modulated amplitude electric field in a left-handed material (LHM), we show that the ponderomotive interaction between the field and low-frequency potential distributions leads to spontaneous generation of magnetic fields, whose form and properties are discussed.
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TL;DR: In this paper, the quantum effects on the magnetization due to the ponderomotive force are investigated in cold quantum plasmas and it is shown that magnetization diminishes with an increase of the frequency of the electromagnetic field.
38 citations
TL;DR: In this paper, the temperature effects on the nonstationary Karpman-Washimi ponderomotive magnetization were investigated in quantum Fermi plasmas and it was shown that the magnetization decreases with increasing temperature.
Abstract: The temperature effects on the nonstationary Karpman–Washimi ponderomotive magnetization are investigated in quantum Fermi plasmas. The cyclotron frequency due to the ponderomotive force of the electromagnetic wave has been obtained as a function of the Fermi Debye length and quantum wavelength. It is found that the Karpman–Washimi ponderomotive magnetization decreases with increasing Fermi temperature. The maximum position of the Fermi Debye length is found to be increased with an increase in the frequency in the small Fermi Debye length domain. It is also shown that the Fermi ponderomotive magnetization decreases with increasing frequency in the large Fermi Debye length domain. In addition, it is shown that the frequency dependence on the ponderomotive magnetization diminishes with increasing Fermi temperature.
22 citations
TL;DR: The spin interaction effects on the Karpman-Washimi ponderomotive magnetization in quantum plasmas are investigated in this article, where the spin correction effect strongly enhances the radiation spectrum.
Abstract: The spin interaction effects on the Karpman-Washimi ponderomotive magnetization are investigated in quantum plasmas. The induced Karpman-Washimi magnetization and cyclotron frequency due to the ponderomotive interaction are obtained as functions of the electron quantum wave length, Fermi wave number, wave frequency, and wave number. It is found that the spin interaction correction significantly enhances the Karpman-Washimi magnetization. It is also found the Karpman-Washimi magnetization increases with increasing Fermi wave number. In addition, it is found that the spin correction effect strongly enhances the radiation spectrum. It would be expected that the Karpman-Washimi interaction can be a possible terahertz radiation mechanism in a quantum plasma.
14 citations
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TL;DR: A composite medium, based on a periodic array of interspaced conducting nonmagnetic split ring resonators and continuous wires, that exhibits a frequency region in the microwave regime with simultaneously negative values of effective permeability and permittivity varepsilon(eff)(omega).
Abstract: We demonstrate a composite medium, based on a periodic array of interspaced conducting nonmagnetic split ring resonators and continuous wires, that exhibits a frequency region in the microwave regime with
8,057 citations
TL;DR: A mechanism for depression of the plasma frequency into the far infrared or even GHz band is proposed: Periodic structures built of very thin wires dilute the average concentration of electrons and considerably enhance the effective electron mass through self-inductance.
Abstract: The plasmon is a well established collective excitation of metals in the visible and near UV, but at much lower frequencies dissipation destroys all trace of the plasmon and typical Drude behavior sets in. We propose a mechanism for depression of the plasma frequency into the far infrared or even GHz band: Periodic structures built of very thin wires dilute the average concentration of electrons and considerably enhance the effective electron mass through self-inductance. Computations replicate the key features and confirm our analytic theory. The new structure has novel properties not observed before in the GHz band, including some possible impact on superconducting properties.
3,954 citations
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12 Mar 2014
TL;DR: In this article, the complex dielectric-constant tensor and normal waves in a medium are used to calculate the tensor tensor in a crystal, and a classification of the States of Mechanical Excitons is given.
Abstract: 1. Introduction.- 2. The Complex Dielectric-Constant Tensor ?ij(?,k) and Normal Waves in a Medium.- 3. The Tensor ?ij(?,k) in Crystals.- 4. Spatial Dispersion in Crystal Optics.- 5. Surface Excitons and Polaritons.- 6. Microscopic Theory. Calculation of the Tensor ?ij(?,k).- 7. Conclusion.- A.1 Crystal-Symmetry Notation.- A.2 Information from Space Group Theory.- A.2.1 Classification of the States of Mechanical Excitons.- Notation.- References.
706 citations
308 citations