ON THE SURFACE GYROMAGNETIC PLASMONS IN A METAL SPHERE

It is argued that in the long wavelength limit of electromagnetic, far infrared, field optical response of an ultrafine metal particle threaded by uniform magnetic field can be properly modeled by equations of semiclassical electron theory in terms of the surface inertial-wave-like oscillations of free electrons driven by Lorentz restoring force. The detailed calculation of the frequency of size-independent gyromagnetic plasmon resonances computed as a function of multipole degree of electron cyclotron oscillations is presented. This spectrum is derived in juxtaposition with the canonical Mie's spectral formula for the surface plasmon resonances caused by the Coulomb-force-driven plasma oscillations of conduction electrons.

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Magnetic modulation of mid and far-infrared plasmon resonances using the orientational magneto optical effect

Applied Physics Letters ◽

10.1063/5.0045387 ◽

2021 ◽

Vol 118 (11) ◽

pp. 114102

Author(s):

Gaspar Armelles ◽

Alfonso Cebollada

Keyword(s):

Far Infrared ◽

Optical Effect ◽

Plasmon Resonances ◽

Magneto Optical Effect

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Tuning the Fano Resonance Between Localized and Propagating Surface Plasmon Resonances for Refractive Index Sensing Applications

Plasmonics ◽

10.1007/s11468-013-9549-3 ◽

2013 ◽

Vol 8 (3) ◽

pp. 1379-1385 ◽

Cited By ~ 53

Author(s):

Kristof Lodewijks ◽

Jef Ryken ◽

Willem Van Roy ◽

Gustaaf Borghs ◽

Liesbet Lagae ◽

...

Keyword(s):

Refractive Index ◽

Surface Plasmon ◽

Fano Resonance ◽

Surface Plasmon Resonances ◽

Refractive Index Sensing ◽

Sensing Applications ◽

Plasmon Resonances

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Study of Broadband Tunable Properties of Surface Plasmon Resonances of Noble Metal Nanoparticles Using Mie Scattering Theory: Plasmonic Perovskite Interaction

Plasmonics ◽

10.1007/s11468-015-0097-x ◽

2015 ◽

Vol 11 (3) ◽

pp. 713-719 ◽

Cited By ~ 15

Author(s):

Nilesh Kumar Pathak ◽

R. P. Sharma

Keyword(s):

Metal Nanoparticles ◽

Noble Metal ◽

Surface Plasmon ◽

Scattering Theory ◽

Mie Scattering ◽

Noble Metal Nanoparticles ◽

Surface Plasmon Resonances ◽

Tunable Properties ◽

Plasmon Resonances ◽

Mie Scattering Theory

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Optically Abrupt Localized Surface Plasmon Resonances in Si Nanowires by Mitigation of Carrier Density Gradients

ACS Nano ◽

10.1021/nn504974z ◽

2015 ◽

Vol 9 (2) ◽

pp. 1250-1256 ◽

Cited By ~ 19

Author(s):

Li-Wei Chou ◽

Dmitriy S. Boyuk ◽

Michael A. Filler

Keyword(s):

Surface Plasmon ◽

Carrier Density ◽

Localized Surface Plasmon ◽

Density Gradients ◽

Si Nanowires ◽

Surface Plasmon Resonances ◽

Localized Surface Plasmon Resonances ◽

Plasmon Resonances

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Thermionic constants of metals and semiconductors - IV. Monovalent metals (continued)

Proceedings of the Royal Society of London Series A - Mathematical and Physical Sciences ◽

10.1098/rspa.1954.0194 ◽

1954 ◽

Vol 225 (1161) ◽

pp. 159-172

Keyword(s):

Thermal Expansion ◽

Work Function ◽

Temperature Variation ◽

Condensed Phase ◽

Energy Barrier ◽

External Pressure ◽

Detailed Calculation ◽

Free Electrons ◽

Saturation Vapour Pressure ◽

Thermal Oscillations

In a monovalent metal, in which the valency electrons may be regarded as forming a free-electron assemblage, the assumption of a temperature-independent energy barrier at the surface of the metal is shown to be equivalent to taking the free electrons in the condensed phase, namely, the metal, and the electrons in the gaseous phase in thermal equilibrium with it, as forming a homogeneous single component system . The temperature variation of the work function is then determined by the temperature variation of the therm odynamic potential of the electrons in the condensed phase, when the external pressure is kept constant a t the value of the saturation vapour pressure of the electrons, which is equivalent to keeping the pressure of the electron assemblage in the condensed phase also constant, since the energy barrier at the surface is independent of temperature. It is further shown that for a degenerate, or nearly degenerate, electron assemblage the specific heat at constant pressure is the same as that at constant volume, and it is easily calculated. The temperature coefficient of the work function calculated therefrom corresponds to an apparent lowering of about 8 to 10% in the value of the A coefficient in therm ionic emission. This agrees with observation. On the other hand, the thermal expansion of the lattice is found to be about 25 to 50 times that to be expected thermodynamically for the electron assemblage in the condensed phase. This result, when viewed against the nearly normal observed value of the A coefficient, shows that the energy barrier at the surface of the metal should decrease with increase of temperature by the same amount by which the thermodynamic potential of the electrons in the condensed phase decreases as a result of the thermal expansion of the lattice. A detailed calculation is made of the effect of both the thermal expansion of the lattice, and the increased thermal oscillations of the atoms in the lattice, associated with the rise in temperature, on the energy of the barrier at the surface. The net effect is found to be a lowering of this energy of the required magnitude.

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