Microscopic theory of the long-wavelength modes of two-component plasmas and ionic liquids

For a two-component bosonic system, the components can be mapped onto a pseudo-spin degree of freedom with spin quantum number S = 1/2. We provide a rigorous proof that for a wide-range of real Hamiltonians with component independent mass and interaction, the ground state is a ferromagnetic state with pseudospin fully polarized. The spin-wave excitations are studied and found to have quadratic dispersion relations at long wavelength.

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CHARGE CRYSTAL MODEL FOR THE HIGH-Tc SUPERCONDUCTIVITY

Modern Physics Letters B ◽

10.1142/s0217984906011165 ◽

2006 ◽

Vol 20 (10) ◽

pp. 571-584 ◽

Cited By ~ 4

Author(s):

Y. H. KIM ◽

P. H. HOR

Keyword(s):

High Temperature Superconductivity ◽

Three Dimensional ◽

Microscopic Theory ◽

Far Infrared ◽

Two Dimensional ◽

High Tc ◽

Long Wavelength ◽

Crystal Model ◽

A Charge ◽

Coherent Picture

We propose a charge crystal model that captures all the essential physics of the high temperature superconductivity (HTS) in the long wavelength limit. Based on the recent transport and the far-infrared (far-IR) experiments, we argue that the three-dimensional (3D) ordering of the pinned two-dimensional (2D) square electronic lattice (EL) in each CuO 2 plane is the building block of HTS. Incorporating the physical picture derived from the neutron scattering experiments, we demonstrate that our model presents a coherent picture of the HTS. We suggest that the charge crystal model serves as a model for the microscopic theory and, hence, offers the key to the mechanism for the HTS.

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Microscopic Theory of the Growth of Two-Component Crystals

Crystals - Modern Theory of Crystal Growth I ◽

10.1007/978-3-642-68938-3_3 ◽

1983 ◽

pp. 43-73 ◽

Cited By ~ 1

Author(s):

Werner Haubenreisser ◽

Hubert Pfeiffer

Keyword(s):

Microscopic Theory ◽

Two Component

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Use of pyridinium ionic liquids as catalysts for the synthesis of 3,5-bis(dodecyloxycarbonyl)-1,4-dihydropyridine derivative

Open Chemistry ◽

10.2478/s11532-010-0132-x ◽

2011 ◽

Vol 9 (1) ◽

pp. 143-148 ◽

Cited By ~ 19

Author(s):

Karlis Pajuste ◽

Aiva Plotniece ◽

Kintija Kore ◽

Liva Intenberga ◽

Brigita Cekavicus ◽

...

Keyword(s):

Ionic Liquids ◽

Gene Delivery ◽

Nucleophilic Substitution ◽

Butyric Acid ◽

Alkyl Ester ◽

Enoic Acid ◽

Hantzsch Synthesis ◽

Two Component ◽

Dihydropyridine Derivative

AbstractThe synthesis of cationic amphiphilic 1,4-dihydropyridine derivative, potential gene delivery agent is achieved via an efficient multi-step sequence. The key step of this approach is a two-component Hantzsch type cyclisation of 3-oxo-2-[1-phenylmethylidene]-butyric acid dodecyl ester and 3-amino-but-2-enoic acid dodecyl ester utilising bis(2-hydroxyethyl)ether as a solvent and 1-butyl-4-methylpyridinium chloride as a catalyst. The 1,4-dihydropyridine derivative with long alkyl ester chains at positions 3 and 5 of the 1,4-DHP ring — 3,5-bis(dodecyloxycarbonyl)-2,6-dimethyl-4-phenyl-1,4-dihydropyridine was obtained in substantially higher yield with respect to classical Hantzsch synthesis. Bromination of this compound followed by nucleophilic substitution of bromine with pyridine gave the desired cationic amphiphilic 1,4-dihydropyridine.

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MAGNETOPLASMA OSCILLATIONS OF A TWO-DIMENSIONAL, TWO-COMPONENT PLASMA

Modern Physics Letters B ◽

10.1142/s0217984996000821 ◽

1996 ◽

Vol 10 (16) ◽

pp. 737-744

Author(s):

NGUYEN QUOC KHANH

Keyword(s):

Random Phase Approximation ◽

Random Phase ◽

Three Dimensional ◽

Collective Modes ◽

Two Dimensional ◽

Long Wavelength ◽

Effective Masses ◽

Two Component ◽

Component Plasma ◽

The Individual

We investigate the magnetoplasma excitations in a system comprised of two parallel two-dimensional conducting layers separated by a distance 2d>0. The individual layers are assumed to have, in general, different effective masses, particle densities and charges. The dispersion equations are derived quantum mechanically within the random phase approximation and the spectrum of the long wavelength collective modes is calculated. We also investigate the mutual phase of two-dimensional magnetoplasma oscillations and show that this mutual phase is similar to that in the three-dimensional case and does not depend on the interlayer distance.

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