Oblique-incidence far-infrared reflectivity study of the uniaxial antiferromagnet<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">FeF</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>

Abraha, Kamsul; Brown, Dennis E.; Dumelow, T.; Parker, T.J.; Tilley, D. R.

doi:10.1103/physrevb.50.6808

Cited by 44 publications

(36 citation statements)

References 15 publications

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“…Effects have been shown theoretically [1][2][3][4][5][6] and experimentally [7][8][9][10], one of the most important being that associated with optical reflection. Nonreciprocity of reflection implies that the properties of the reflected beam for an angle of incidence +θ 1 differ from those for an angle of incidence −θ 1 .…”

Section: Introductionmentioning

confidence: 99%

Spin canting induced nonreciprocal Goos-Hänchen shifts

Macêdo¹,

Stamps²,

Dumelow³

2014

Opt. Express

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Recent studies on surface reflection illustrate how light beams can be laterally shifted from the position predicted by geometrical optics, the so called Goos-Hänchen effect. In antiferromagnets this shifts can be controlled with an external magnetic field. We show that a configuration in which spins cant in response to applied magnetic fields enhance possibilities of field controlled shifts. Moreover, we show that nonreciprocal displacements are possible, for both oblique and normal incidence, due to inherent nonreciprocity of the polariton phase with respect to the propagation direction. In the absence of an external field, reciprocal displacements occur.

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Section: Introductionmentioning

confidence: 99%

Spin canting induced nonreciprocal Goos-Hänchen shifts

Macêdo¹,

Stamps²,

Dumelow³

2014

Opt. Express

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“…In the external magnetic field 0 H  , the magnetic permeability is well-known, with its nonzero elements [33,37] …”

Section: Emm For One-dimensional Af/ic Pcsmentioning

confidence: 99%

Optical Properties of Antiferromagnetic/Ion-Crystalic Photonic Crystals

Fu¹,

Wang²

2013

Ferromagnetic Resonance - Theory and Applications

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“…One can analyze (20) in the following special case, when kd 1. The hyperbolic tangent in (20) tends to kd, hence we have the explicit solution for k:…”

Section: And μ (I)mentioning

confidence: 99%

“…Bulk and surface polaritons on antiferromagnetics were considered theoretically in [20,21], and have been verified experimentally for FeF 2 in [18,19]. The collective excitations such as polaritons, magnetostatic waves which propagate in the antiferromagnetic superstructures as superlattices, and thin films have attracted considerable attention during last decades (see [15,[22][23][24]).…”

Section: Introductionmentioning

confidence: 99%

Magnetic Polaritons, Magnetostatic Waves and Effective-Medium Approximation for Antiferromagnetic Superlattice with Impurity in Parallel Magnetic Field

Tagiyeva

Tanatar

2011

J Supercond Nov Magn

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We derive the general effective-medium expression for the surface-guided magnetic polaritons and magnetostatic waves, which propagate in the antiferromagnetic superlattice with antiferromagnetic impurity film, and investigate the influence of the external magnetic field on the energy of localized magnetic polaritons. Similarly as in the free-standing antiferromagnetic film, the spectrum of magnetic polaritons in the presence of an external magnetic field is reciprocal in the sense that the frequency is independent of the direction of propagation. In the system under consideration one finds both the surface polaritons which are strongly localized in the antiferromagnetic film which acts as a waveguide, and waves which are weakly localized within film. The first waves are the pure surface modes or guided modes where excitations have a standing-wavelike character. This important feature of the localized magnetic polaritons enables us to use these antiferromagnetic systems in the technologies for devices (for example, in resonators) that work at wavelengths in the infrared region. Second waves have the very small value of the decay parameter and appear in the regions where the surface mode penetrates into the bulk band, i.e. the magnetic polaritons are weakly localized in the impurity film region. Now we obtain the mixed type mode having both bulk and surface characteristics. Also, the general way in which the dispersion curves vary with the volume fraction of the superlattice components and with impurity film is illustrated in this study.

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Oblique-incidence far-infrared reflectivity study of the uniaxial antiferromagnetFeF2

Cited by 44 publications

References 15 publications

Spin canting induced nonreciprocal Goos-Hänchen shifts

Spin canting induced nonreciprocal Goos-Hänchen shifts

Optical Properties of Antiferromagnetic/Ion-Crystalic Photonic Crystals

Magnetic Polaritons, Magnetostatic Waves and Effective-Medium Approximation for Antiferromagnetic Superlattice with Impurity in Parallel Magnetic Field

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