New Class of Surface Magnon Polaritons in Enantiomeric Antiferromagnetic Structures

Tarkhanyan, Roland H.

doi:10.2528/pierb12010705

Cited by 6 publications

(4 citation statements)

References 35 publications

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“…We should note, earlier it was reported in [44] that such a form of the dispersion curve is also inherent to surface magnon-polaritons in an enantiomeric antiferromagnetic (bi-anisotropic) structure.…”

Section: Dispersion Curves Of Surface Polaritonsmentioning

confidence: 64%

Coexistence of bulk and surface polaritons in a magnetic-semiconductor superlattice influenced by a transverse magnetic field

Tuz

Fesenko

Fedorin

et al. 2017

Journal of Applied Physics

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It is demonstrated that the effect of coexistence of bulk and surface polaritons within the same frequency band and wavevector space can be achieved in a magnetic-semiconductor superlattice providing a conscious choice of characteristic resonant frequencies and material fractions of the structure's underlying components as well as geometry of the external static magnetic field. The study is based on the effective medium theory which is involved to calculate dispersion characteristics of the long-wavelength electromagnetic modes of ordinary and extraordinary bulk polaritons and hybrid EH and HE surface polaritons derived via averaged expressions with respect to the effective constitutive parameters of the superlattice.

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Section: Dispersion Curves Of Surface Polaritonsmentioning

confidence: 64%

Coexistence of bulk and surface polaritons in a magnetic-semiconductor superlattice influenced by a transverse magnetic field

Tuz

Fesenko

Fedorin

et al. 2017

Journal of Applied Physics

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“…Although there are a lot researches on surface plasmon polaritons since they exhibit a great application prospect in nano-and microoptics and technology [16], the larger optical loss is a major impediment for applications. One can use surface phonon polaritons to substitute them in the infrared frequency range and surface magnon polaritons in antiferromagnetic (AF) to replace them in the THz range or far-infrared range for some specific aspects since the two kinds of surface polaritons experience a much smaller loss [17,18]. In engineering, researchers proposed another improvement to excite spoof surface plasmon polaritons (SSPPs) propagating on well-designed waveguide at microwave and Terahertz frequencies to compensate the large optical loss [19,20].…”

Section: Introductionmentioning

confidence: 99%

“…equations(18) represent Dyakonov surface magnetostatic modes or Dyakonov surface magnons (DSMs) supported by the AF film, where the solution of equation (18a) is one even DSM, but that of equation (18b) is one odd DSM. Their existence requires at least 0…”

mentioning

confidence: 99%

Dyakonov surface polaritons in antiferromagnet film

Hao

Song

et al. 2023

Phys. Scr.

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Dyakonov surface polaritons (DSPs) in a single antiferromagnetic (AF) film are investigated in the parallel geometry where the AF anisotropic axis is parallel to the film and no external magnetic field is applied. The analytical dispersion relation is obtained and four surface modes are found, among which one symmetric mode and an anti-symmetric mode are exist in the AF reststrahlen frequency band, and another symmetric and anti-symmetric modes are situated out the reststrahlen band. The existence of symmetric and anti-symmetric modes is caused by the mirror symmetry and finite thickness of the AF film. A pair of modes in the band have magnetostatic limits but the other pair out the band do not. The dispersion properties, field and energy-flux density distributions of each DSP are numerically calculated based on the FeF2 film for various propagating directions and film thicknesses. It is very interesting that the energy flux of each DSP can seriously deviates from its propagation direction, and the largest walk-off angle can reach 200˚.In addition, we briefly discuss dispersion properties of Dyakonov odd and even guided modes, they also are symmetric and antisymmetric and have multiple solutions.

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“…But their methods are inappropriate for the CMGs on account of the lack of ferromagnetic pole-pieces to impact the air-gap magnetic field. Recently, some researchers have calculated and investigated the characteristics of ferromagnetic material and antiferromagnetic structures according to the complex numerical methods [13,14]. Based on the Poisson's and Laplace's equation, literature [15,16] obtained a two dimension (2-D) analytical result of air-gap magnetic field for CMGs.…”

Section: Introductionmentioning

confidence: 99%

A Three Dimensional Analytical Calculation of the Air-Gap Magnetic Field and Torque of Coaxial Magnetic Gears

Ge¹,

Nie²,

Xin³

2012

PIER

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Abstract-In order to solve the defects that the end-effect of magnetic field is ignored in two dimension (2-D) analytical method or 2-D finite element method (FEM); meanwhile, mass computer resource and time for parametric design or optimization are wasted in three dimension (3-D) FEM, a concise and efficient 3-D analytical approach is put forward for the calculation of the air-gap magnetic field and torque of coaxial magnetic gears. Based on the cylindrical coordinates where a coaxial magnetic gear is in, the equivalent current model and vector magnetic potential equation of permanent magnets in high speed permanent magnetic ring are constituted. By superposed magnetic flux density of every tile permanent magnets on high speed permanent magnetic ring in cylindrical coordinates, a air-gap magnetic field 3-D analytical formula is set up without ferromagnetic pole-pieces; in the interest of modulated air-gap magnetic field 3-D analytical formula with ferromagnetic pole-pieces, three types boundary conditions using state equations of contact surfaces between ferromagnetic pole-pieces and air-gap are established by a thorough analysis of the modulate mechanism of ferromagnetic pole-pieces. Finally, magnets of the low speed permanent magnetic ring are reduced to a distribution of equivalent current, which experience the Lorentz force in modulated magnetic field of high speed permanent magnetic ring for torque calculation. The integrals in all aforementioned calculation are axial, so the end-effect is embodied in above analytical model and more precise than 2-D analytical method or 2-D FEM. As the calculation results, the formula is accurate but faster than the 3-D FEM. The analytical model is suited for programmable calculation and that will make the structural and parametric design or optimization of coaxial magnetic gears simple and timesaving.

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New Class of Surface Magnon Polaritons in Enantiomeric Antiferromagnetic Structures

Cited by 6 publications

References 35 publications

Coexistence of bulk and surface polaritons in a magnetic-semiconductor superlattice influenced by a transverse magnetic field

Coexistence of bulk and surface polaritons in a magnetic-semiconductor superlattice influenced by a transverse magnetic field

Dyakonov surface polaritons in antiferromagnet film

A Three Dimensional Analytical Calculation of the Air-Gap Magnetic Field and Torque of Coaxial Magnetic Gears

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