Single-particle—collective-mode coupling and the Mie resonance in small metallic particles: Optical properties of colloidal Na in NaCl

1981 ◽  
Vol 24 (2) ◽  
pp. 1079-1082 ◽  
Author(s):  
R. P. Devaty ◽  
A. J. Sievers
Keyword(s):  
Optical Properties ◽  
Single Particle ◽  
Mode Coupling ◽  
Collective Mode ◽  
Metallic Particles ◽  
Mie Resonance

White zein colloidal particles: synthesis and characterization of their optical properties on the single particle level and in concentrated suspensions

Soft Matter ◽  
2018 ◽  
Vol 14 (15) ◽  
pp. 2870-2878 ◽  
Author(s):  
F. Y. de Boer ◽  
R. N. U. Kok ◽  
A. Imhof ◽  
K. P. Velikov
Keyword(s):  
Optical Properties ◽  
Single Particle ◽  
Colloidal Particles ◽  
Plant Protein ◽  
Synthesis And Characterization ◽  
Concentrated Suspensions ◽  
Food And Beverages ◽  
Single Particle Level ◽  
Particle Level

Driven by the growing interest in using natural ingredients in food and beverages, novel plant protein-based particles are developed as all natural, edible white colorant and clouding agent.

scholarly journals Single-particle states vs. collective modes: friends or enemies ?

2018 ◽  
Vol 178 ◽  
pp. 02003 ◽  
Author(s):  
T. Otsuka ◽  
Y. Tsunoda ◽  
T. Togashi ◽  
N. Shimizu ◽  
T. Abe
Keyword(s):  
Single Particle ◽  
Collective Motion ◽  
Collective Mode ◽  
Self Organization ◽  
Collective Modes ◽  
Particle State ◽  
Nuclear Forces ◽  
Atomic Nuclei ◽  
Many Body Systems ◽  
Underlying Mechanisms

The quantum self-organization is introduced as one of the major underlying mechanisms of the quantum many-body systems. In the case of atomic nuclei as an example, two types of the motion of nucleons, single-particle states and collective modes, dominate the structure of the nucleus. The collective mode arises as the balance between the effect of the mode-driving force (e.g., quadrupole force for the ellipsoidal deformation) and the resistance power against it. The single-particle energies are one of the sources to produce such resistance power: a coherent collective motion is more hindered by larger spacings between relevant single particle states. Thus, the single-particle state and the collective mode are “enemies” against each other. However, the nuclear forces are rich enough so as to enhance relevant collective mode by reducing the resistance power by changing single-particle energies for each eigenstate through monopole interactions. This will be verified with the concrete example taken from Zr isotopes. Thus, the quantum self-organization occurs: single-particle energies can be self-organized by (i) two quantum liquids, e.g., protons and neutrons, (ii) monopole interaction (to control resistance). In other words, atomic nuclei are not necessarily like simple rigid vases containing almost free nucleons, in contrast to the naïve Fermi liquid picture. Type II shell evolution is considered to be a simple visible case involving excitations across a (sub)magic gap. The quantum self-organization becomes more important in heavier nuclei where the number of active orbits and the number of active nucleons are larger.

SINGLE-PARTICLE AND OPTICAL EXCITATIONS IN DOPED MOTT- HUBBARD INSULATORS

1992 ◽  
Vol 06 (05n06) ◽  
pp. 589-602 ◽  
Author(s):  
WALTER STEPHAN ◽  
PETER HORSCH
Keyword(s):  
Optical Properties ◽  
Band Structure ◽  
Fermi Surface ◽  
Copper Oxide ◽  
Hubbard Model ◽  
Optical Conductivity ◽  
Single Particle ◽  
Oxide Superconductors ◽  
Two Dimensional ◽  
Copper Oxide Superconductors

Recent numerical results for the single-particle spectral function and optical conductivity of the two-dimensional Hubbard and t−J models are reviewed. Already for two holes in systems of sixteen to twenty sites (≥ 10% doping) a large electronic Fermi surface, compatible with Luttinger’s theorem, is observed. The full single-particle Green’s function is examined, and is shown to exhibit quasiparticle-like behavior, with dispersion consistent with the band structure of the non-interacting limit, and band width scaling approximately as J for J smaller than t. The optical conductivity of the Hubbard and t−J models is shown to have many features in common with recent experiments on copper oxide superconductors. The importance of the often neglected 3-site terms which arise in the derivation of the t−J model from the Hubbard model for optical properties is discussed.

scholarly journals Unusual Layer-Dependent Charge Distribution, Collective Mode Coupling, and Superconductivity in Multilayer CuprateBa2Ca3Cu4O8F2

2009 ◽  
Vol 103 (3) ◽  
Author(s):  
Yulin Chen ◽  
Akira Iyo ◽  
Wanli Yang ◽  
Akihiro Ino ◽  
M. Arita ◽  
...  
Keyword(s):  
Charge Distribution ◽  
Mode Coupling ◽  
Collective Mode

Oscillation centres and mode coupling in non-uniform Vlasov plasma

1979 ◽  
Vol 22 (1) ◽  
pp. 105-119 ◽  
Author(s):  
Shayne Johnston ◽  
Allan N. Kaufman
Keyword(s):  
Perturbation Theory ◽  
Single Particle ◽  
Mode Coupling ◽  
Poisson Brackets ◽  
Lie Transform ◽  
Time Integral ◽  
Compact Expression ◽  
Hamiltonian Perturbation Theory ◽  
Insight Into ◽  
Vlasov Plasma

The general coupling coefficient for three electromagnetic linear modes of an inhomogeneous and relativistic plasma is derived from the oscillation-centre viewpoint. A concise and manifestly symmetric formula is obtained; it is cast in terms of Poisson brackets of the single-particle perturbation Hamiltonian and its convective time-integral along unperturbed orbits. The simplicity of the compact expression obtained is shown to lead to a new insight into the essence of three-wave coupling and of the Manley–Rowe relations governing such interactions. Thus, the interaction Hamiltonian of the three waves is identified as simply the trilinear contribution to the single-particle (new) Hamiltonian, summed over all non-resonant particles. The relation between this work and the Lie-transform approach to Hamiltonian perturbation theory is discussed.

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