Long-range surface magnetoplasmons in thin nickel films

Hickernell, Robert K.; Sarid, Dror

doi:10.1364/ol.12.000570

Cited by 26 publications

(12 citation statements)

References 9 publications

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“…[ 182 ] In later years, the case of Ni and degenerate semiconductors thin fi lms embedded between two semi-infi nite dielectrics [183][184][185][186][187][188][189] or even multilayers [ 190 ] was also analyzed, showing similar behaviour. [ 182 ] In later years, the case of Ni and degenerate semiconductors thin fi lms embedded between two semi-infi nite dielectrics [183][184][185][186][187][188][189] or even multilayers [ 190 ] was also analyzed, showing similar behaviour.…”

Section: Magnetic Field Effects On the Plasmonic Propertiesmentioning

confidence: 99%

“…where k 0 is the light wavevector in vacuum. [ 182 ] In later years, the case of Ni and degenerate semiconductors thin fi lms embedded between two semi-infi nite dielectrics [183][184][185][186][187][188][189] or even multilayers [ 190 ] was also analyzed, showing similar behaviour. Recently, with the push of plasmonics, there has been a renewed interest of the effect of the magnetic fi eld on SPPs, now focused on SPPs supported by metals.…”

Section: Magnetic Field Effects On the Plasmonic Propertiesmentioning

confidence: 99%

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Magnetoplasmonics: Combining Magnetic and Plasmonic Functionalities

Armelles¹,

Cebollada²,

García‐Martín³

et al. 2013

Advanced Optical Materials

568

422

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Section: Magnetic Field Effects On the Plasmonic Propertiesmentioning

confidence: 99%

Section: Magnetic Field Effects On the Plasmonic Propertiesmentioning

confidence: 99%

Magnetoplasmonics: Combining Magnetic and Plasmonic Functionalities

Armelles¹,

Cebollada²,

García‐Martín³

et al. 2013

Advanced Optical Materials

568

422

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show abstract

“…From a practical point of view, however, large non-reciprocity in the emission and absorption spectra without the necessity of external magnetic field is of great interest. However, conventional ferromagnets such as nickel possess a small anomalous Hall angle, and thus the non-reciprocity remains small 19 .…”

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confidence: 99%

Large nonreciprocal absorption and emission of radiation in type-I Weyl semimetals with time reversal symmetry breaking

et al. 2020

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The equality between the spectral, directional emittance and absorptance of an object under local thermal equilibrium is known as Kirchhoff's law of radiation. The breakdown of Kirchhoff's law of radiation is physically allowed by breaking time-reversal symmetry and can open new opportunities for novel non-reciprocal light emitters and absorbers. Large anomalous Hall conductivity and angle recently observed in topological Weyl semimetals, particularly type-I magnetic Weyl semimetals and type-II Weyl semimetals, are expected to create large nonreciprocal electromagnetic wave propagation. In this work, we focus on type-I magnetic Weyl semimetals and show via modeling and simulation that non-reciprocal surface plasmons polaritons can result in pronounced non-reciprocity without an external magnetic field. The modeling in this work begins with a single pair of Weyl nodes, followed by a more realistic model with multiple paired Weyl nodes. Fermi-arc surface states are also taken into account through the surface conductivity. This work points to the promising applicability of topological Weyl semimetals for magneto-optical and energy applications. . These authors contributed equally to this work. Main textKirchhoff's law of radiation establishes the equality between the spectral, directional absorptance ( , ) and the spectral, directional emittance ( , ) of an object in local thermal equilibrium, i.e., ( , ) = ( , ) , where and are the wavelength and the direction of incoming and outgoing radiation, respectively. Fundamentally, Kirchhoff's law of radiation underlies the theoretical efficiency limit in radiative energy conversion since converting absorbed incoming radiation into another form of energy, such as electricity or heat, always entails the outgoing emission at the same wavelength in the same direction from the object, which causes an intrinsic loss 1-3 . It has been argued 2,4,5 that Kirchhoff's law of radiation is not a required condition for the validity of the second law of thermodynamics in systems that exchange radiative energy, but rather a result of the Lorentz reciprocity theorem in which the only assumptions are a linear constitutive relation and symmetric permittivity and permeability tensors 6,7 . Thus, the violation of Kirchhoff's law of radiation, i.e., non-reciprocity in the spectral, directional absorptance and emittance, is physically allowed, and its realization can open new opportunities for novel light emitters and absorbers for a wide range of radiative applications including solar photovoltaics, thermo-photovoltaics, and antennas 1,8 .Non-reciprocity in a medium often arises due to non-zero anti-symmetric off-diagonal elements of the dielectric tensor of the medium, which creates non-reciprocal electromagnetic modes 9 . One way to create the anti-symmetric off-diagonal elements is by inducing magnetic responses either by the Hall response under an external magnetic field or by spontaneous magnetization in materials, namely the anomalous Hall effect 10 . The anomalous Hall effect can origin...

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“…Theoretical treatment of SP propagation at the interface between a dielectric and a ferromagnetic metal (gyromagnetic material, such as nickel and iron) and between a dielectric and doped semiconductor is well developed by several investigators [20]- [28]. In these cases, the dispersion relation shows branching of the dispersion curve depending on the orientation of the applied magnetic field and the plasma frequency [22].…”

Section: Modelmentioning

confidence: 99%

A gigahertz surface magneto-plasmon optical modulator

Chau

Irvine

Elezzabi

2004

IEEE J. Quantum Electron.

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We propose a novel high-speed magnetooptic (MO) modulator based on the optical excitation of surface magneto-plasmon (SMP) waves in bismuth-substituted yttrium iron garnet (Bi-YIG). A model describing magnetization dynamics of the Bi-YIG film is used in conjunction with an SMP reflectivity model to evaluate the performance of the device. In developing the reflectivity model, the dispersion relation for the SMP waves at a Bi-YIG-metal interface is derived. The optical response of the device is modeled for various driving pulses, and the performance of the device is discussed in terms of response time, efficiency, and bandwidth. Using practical material parameters, it is found that the modulator has an improved efficiency over MO modulation devices relying on bulk propagation for comparable driving current pulse durations, as well as the added benefits of a miniature design, multigigahertz operation, and tunable bandwidth. The analysis presented here provides a useful framework for the design and development of magneto-plasmon photonic devices.

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Long-range surface magnetoplasmons in thin nickel films

Cited by 26 publications

References 9 publications

Magnetoplasmonics: Combining Magnetic and Plasmonic Functionalities

Magnetoplasmonics: Combining Magnetic and Plasmonic Functionalities

Large nonreciprocal absorption and emission of radiation in type-I Weyl semimetals with time reversal symmetry breaking

A gigahertz surface magneto-plasmon optical modulator

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