Hybrid acousto-electromagnetic metamaterial superconductors

Smolyaninov, Igor I.; Smolyaninova, Vera N.

doi:10.1016/j.physc.2020.1353730

Cited by 2 publications

(2 citation statements)

References 22 publications

(35 reference statements)

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“…2. We should also mention that similar to photons, the dispersion law of phonons in a metamaterial may also be made hyperbolic [25,26], so that both photons and phonons will live in an effective Minkowski spacetime. Quite obviously, the phonons in this picture become the analogues of gravitons.…”

Section: Methods: Acoustic Waves In Hyperbolic Materials As Analogues...mentioning

confidence: 99%

Analogue Quantum Gravity in Hyperbolic Metamaterials

Smolyaninov

Smolyaninova

2022

Universe

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It is well known that extraordinary photons in hyperbolic metamaterials may be described as living in an effective Minkowski spacetime, which is defined by the peculiar form of the strongly anisotropic dielectric tensor in these metamaterials. Here, we demonstrate that within the scope of this approximation, the sound waves in hyperbolic metamaterials look similar to gravitational waves, and therefore the quantized sound waves (phonons) look similar to gravitons. Such an analogue model of quantum gravity looks especially interesting near the phase transitions in hyperbolic metamaterials where it becomes possible to switch quantum gravity effects on and off as a function of metamaterial temperature. We also predict strong enhancement of sonoluminescence in ferrofluid-based hyperbolic metamaterials, which looks analogous to particle creation in strong gravitational fields.

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Section: Methods: Acoustic Waves In Hyperbolic Materials As Analogues...mentioning

confidence: 99%

Analogue Quantum Gravity in Hyperbolic Metamaterials

Smolyaninov

Smolyaninova

2022

Universe

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“…Metamaterial is a kind of composite material with an artificial structure [22][23][24]. With the development of metamaterials, researchers have found that the concept of metamaterials can be used to design superconductors and a metamaterial superconductor can exhibit a higher T C [25][26][27][28][29][30]. In 2007, our group doped inorganic electroluminescence (EL) material in a superconductor to increase T C via EL.…”

Section: Introductionmentioning

confidence: 99%

Relationship between the TC of Smart Meta-Superconductor Bi(Pb)SrCaCuO and Inhomogeneous Phase Content

Chen

Wang

et al. 2021

Nanomaterials

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A smart meta-superconductor Bi(Pb)SrCaCuO (B(P)SCCO) may increase the critical transition temperature (TC) of B(P)SCCO by electroluminescence (EL) energy injection of inhomogeneous phases. However, the increase amplitude ΔTC (ΔTC=TC−TC,pure) of TC is relatively small. In this study, a smart meta-superconductor B(P)SCCO with different matrix sizes was designed. Three kinds of raw materials with different particle sizes were used, and different series of Y2O3:Sm3+, Y2O3, Y2O3:Eu3+, and Y2O3:Eu3++Ag-doped samples and pure B(P)SCCO were prepared. Results indicated that the TC of the Y2O3 or Y2O3:Sm3+ non-luminescent dopant doping sample is lower than that of pure B(P)SCCO. However, the TC of the Y2O3:Eu3++Ag or Y2O3:Eu3+ luminescent inhomogeneous phase doping sample is higher than that of pure B(P)SCCO. With the decrease of the raw material particle size from 30 to 5 μm, the particle size of the B(P)SCCO superconducting matrix in the prepared samples decreases, and the doping content of the Y2O3:Eu3++Ag or Y2O3:Eu3+ increases from 0.2% to 0.4%. Meanwhile, the increase of the inhomogeneous phase content enhances the ΔTC. When the particle size of raw material is 5 μm, the doping concentration of the luminescent inhomogeneous phase can be increased to 0.4%. At this time, the zero-resistance temperature and onset transition temperature of the Y2O3:Eu3++Ag doped sample are 4 and 6.3 K higher than those of pure B(P)SCCO, respectively.

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Hybrid acousto-electromagnetic metamaterial superconductors

Cited by 2 publications

References 22 publications

Analogue Quantum Gravity in Hyperbolic Metamaterials

Analogue Quantum Gravity in Hyperbolic Metamaterials

Relationship between the TC of Smart Meta-Superconductor Bi(Pb)SrCaCuO and Inhomogeneous Phase Content

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