Nonreciprocal hybrid magnetoplasmonics

Floess, Dominik; Gießen, Harald

doi:10.1088/1361-6633/aad6a8

Cited by 63 publications

(50 citation statements)

References 229 publications

(577 reference statements)

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“…One of the key challenges is indeed to increase the strength of SO-coupling without increasing the plasmon damping. The main strategies currently pursued with conventional ferromagnetic materials, namely without increasing the intrinsic SO-coupling, are (i) periodic arrangements of magnetoplasmonic nanoantennas [58,59]; 9 (ii) 3D ferromagnets [60] and composite ferromagnetic/noble metal [61] and ferromagnetic/dielectric/noble metal nanostructures [62], and (iii) heterogeneous units comprising multiple nanoantennas placed in proximity to enable their near-field interaction [63 -67]. Initial investigations have shown that the enhancement of polarization rotation by one order of magnitude can indeed be achieved following these strategies.…”

Section: Magneto-optical Effects In Magnetoplasmonic and Magnetopmentioning

confidence: 99%

Nanoscale magnetophotonics

Maccaferri

Zubritskaya

Razdolski

et al. 2020

Journal of Applied Physics

125

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This Perspective surveys the state-of-the-art and future prospects of science and technology employing the nanoconfined light (nanophotonics and nanoplasmonics) in combination with magnetism. We denote this field broadly as nanoscale magnetophotonics. We include a general introduction to the field and describe the emerging magneto-optical effects in magnetoplasmonic and magnetophotonic nanostructures supporting localized and propagating plasmons. Special attention is given to magnetoplasmonic crystals with transverse magnetization and the associated nanophotonic non-reciprocal effects, and to magneto-optical effects in periodic arrays of nanostructures. We give also an overview of the applications of these systems in biological and chemical sensing, as well as in light polarization and phase control. We further review the area of nonlinear magnetophotonics, the semiconductor spin-plasmonics, and the general principles and applications of opto-magnetism and nano-optical ultrafast control of magnetism and spintronics.

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Section: Magneto-optical Effects In Magnetoplasmonic and Magnetopmentioning

confidence: 99%

Nanoscale magnetophotonics

Maccaferri

Zubritskaya

Razdolski

et al. 2020

Journal of Applied Physics

125

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“…As we can see, the σ z Pauli matrix is clearly missing from the Weyl equation [Eq. (5)]. We cannot add a term proportional to σ z due to time-reversal symmetry,…”

Section: B Dirac Equationmentioning

confidence: 99%

“…Gyroelectric media, or magnetized plasmas, form the canonical system to study non-reciprocity [1][2][3][4][5][6]. There has been recent interest in such media for their potential to break the time-bandwidth limit inside cavities [7,8], sub-diffraction imaging [9], unique absorption [10] and thermal properties [11], and for one-way topological transitions [12].…”

Section: Introductionmentioning

confidence: 99%

Unidirectional Maxwellian spin waves

Mechelen

Jacob

2019

Nanophotonics

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We develop a unified perspective of unidirectional topological edge waves in non-reciprocal media. We focus on the inherent role of photonic spin in non-reciprocal gyroelectric media, ie. magnetized metals or magnetized insulators. Due to the large body of contradicting literature, we point out at the outset that these Maxwellian spin waves are fundamentally different from well-known topologically trivial surface plasmon polaritons (SPPs). We first review the concept of a Maxwell Hamiltonian in non-reciprocal media, which immediately reveals that the gyrotropic coefficient behaves as a photon mass in two dimensions. Similar to the Dirac mass, this photonic mass opens bandgaps in the energy dispersion of bulk propagating waves. Within these bulk photonic bandgaps, three distinct classes of Maxwellian edge waves exist -each arising from subtle differences in boundary conditions. On one hand, the edge wave solutions are rigorous photonic analogs of Jackiw-Rebbi electronic edge states. On the other hand, for the exact same system, they can be high frequency photonic counterparts of the integer quantum Hall effect, familiar at zero frequency. Our Hamiltonian approach also predicts the existence of a third distinct class of Maxwellian edge wave exhibiting topological protection. This occurs in an intriguing topological bosonic phase of matter, fundamentally different from any known electronic or photonic medium. The Maxwellian edge state in this unique quantum gyroelectric phase of matter necessarily requires a sign change in gyrotropy arising from non-locality (spatial dispersion). In a Drude system, this behavior emerges from a spatially dispersive cyclotron frequency that switches sign with momentum. A signature property of these topological electromagnetic edge states is that they are oblivious to the contacting medium, ie. they occur at the interface of the quantum gyroelectric phase and any medium (even vacuum). This is because the edge state satisfies open boundary conditions -all components of the electromagnetic field vanish at the interface. Furthermore, the Maxwellian spin waves exhibit photonic spin-1 quantization in exact analogy with their supersymmetric spin-1 ⁄2 counterparts. The goal of this paper is to discuss these three foundational classes of edge waves in a unified perspective while providing in-depth derivations, taking into account non-locality and various boundary conditions. Our work sheds light on the important role of photonic spin in condensed matter systems, where this definition of spin is also translatable to topological photonic crystals and metamaterials. arXiv:1903.09278v1 [physics.optics]

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“…Plasmonics allow for the confinement of light on length-scales smaller than the incident wavelength, leading to dramatic enhancements of the electric field within the confining material. Magnetoplasmonics marries ferromagnetism with plasmonics and aims to exploit this field-enhancement in order to produce active optical devices which are tunable, by an external magnetic field [1][2][3][4][5] . The Kerr effect is a well studied example by which magnetism can be used to alter the polarization state of light.…”

Section: Introductionmentioning

confidence: 99%

Thickness dependent enhancement of the polar Kerr rotation in Co magnetoplasmonic nanostructures

et al. 2019

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Large surface plasmon polariton assisted enhancement of the magneto-optical activity has been observed in the past, through spectral measurements of the polar Kerr rotation in Co hexagonal antidot arrays. Here, we report a strong thickness dependence, which is unexpected given that the Kerr effect is considered a surface sensitive phenomena. The maximum Kerr rotation was found to be -0.66 degrees for a 100 nm thick sample. This thickness is far above the typical optical penetration depth of a continuous Co film, demonstrating that in the presence of plasmons the critical lengthscales are dramatically altered, and in this case extended. We therefore establish that the plasmon enhanced Kerr effect does not only depend on the in-plane structuring of the sample, but also on the out-of-plane geometrical parameters, which is an important consideration in magnetoplasmonic device design. arXiv:1611.00078v4 [cond-mat.mes-hall]

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Nonreciprocal hybrid magnetoplasmonics

Cited by 63 publications

References 229 publications

Nanoscale magnetophotonics

Nanoscale magnetophotonics

Unidirectional Maxwellian spin waves

Thickness dependent enhancement of the polar Kerr rotation in Co magnetoplasmonic nanostructures

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