Quantograms as a New Visualization Technique of Electronic Structure of Atomic Systems

2021 ◽  
Vol 57 (2) ◽  
pp. 177-184
Author(s):  
O. I. Meshkov ◽  
V. V. Kazakov ◽  
V. G. Kazakov ◽  
A. A. Potekhin ◽  
E. A. Temnikova ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Visualization Technique ◽  
Atomic Systems

QUANTOGRAMS AS A NEW VISUALIZATION TECHNIQUE FOR THE ELECTRONIC STRUCTURE OF ATOMIC SYSTEMS

2021 ◽  
Vol 57 (2) ◽  
pp. 73-81
Author(s):  
O.I. Mechkov ◽  
V.V. Kazakov ◽  
V.G. Kazakov ◽  
A.A. Potekhina ◽  
E.A. Temnikova ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Visualization Technique ◽  
Atomic Systems

scholarly journals Alternative relativistic formulation of linear spectrum of hydrogen-like systems

2020 ◽  
pp. 171-181
Author(s):  
Ilya E. Eremin ◽  
Vitaliy V. Neshtimenko ◽  
Dmitry S. Shcherban ◽  
Denis V. Fomin
Keyword(s):  
Electronic Structure ◽  
Computational Complexity ◽  
Maximum Degree ◽  
Chemical Elements ◽  
Energy Levels ◽  
Quantum Processes ◽  
Degree Of Ionization ◽  
Atomic Systems ◽  
Relativistic Formulation ◽  
Linear Spectrum

The article describes the possibility of describing the electronic structure of the simplest atomic systems within corpuscular physics theory. The proposed method allows to derive the Rydberg frequency constant without using quantum Bohr postulates. Adequate results of the same type of calculation of the energy levels of the first five chemical elements that are in the maximum degree of ionization are presented. The results of the paper can increase the accuracy and reduce the computational complexity of models of quantum processes and phenomena. This, in turn, may allow one to develop more efficient models and algorithms for controlling such systems.

Information System «Electronic Structure of Atoms»

2011 ◽  
Vol 6 (3) ◽  
pp. 64-70
Author(s):  
Vitaliy G. Kazakov ◽  
Aleksey S. Yatsenko ◽  
Vladislav V. Kazakov
Keyword(s):  
Information System ◽  
Electronic Structure ◽  
Spectral Data ◽  
The Internet ◽  
Tabular Form ◽  
Atomic Systems ◽  
Reporting Data

The article describes information system «Electronic structure of atoms» on spectral data of atomic systems. In addition to reporting data in tabular form the information system implements a unique opportunity to visualize the spectral data in the form of automatically generated charts. Information System published on the Internet

EELS Measurement of the Local Electronic Structure of Copper Atoms Segregated to Aluminum Grain Boundaries

1996 ◽  
Vol 54 ◽  
pp. 342-343
Author(s):  
S.J. Splinter ◽  
J. Bruley ◽  
P.E. Batson ◽  
D.A. Smith ◽  
R. Rosenberg
Keyword(s):  
Electronic Structure ◽  
Grain Boundaries ◽  
Boundary Segregation ◽  
Thin Layers ◽  
Nominal Composition ◽  
Spatially Resolved ◽  
Service Lifetime ◽  
Heat Treated ◽  
Probe Size ◽  
Local Electronic Structure

It has long been known that the addition of Cu to Al interconnects improves the resistance to electromigration failure. It is generally accepted that this improvement is the result of Cu segregation to Al grain boundaries. The exact mechanism by which segregated Cu increases service lifetime is not understood, although it has been suggested that the formation of thin layers of θ-CuA12 (or some metastable substoichiometric precursor, θ’ or θ”) at the boundaries may be necessary. This paper reports measurements of the local electronic structure of Cu atoms segregated to Al grain boundaries using spatially resolved EELS in a UHV STEM. It is shown that segregated Cu exists in a chemical environment similar to that of Cu atoms in bulk θ-phase precipitates.Films of 100 nm thickness and nominal composition Al-2.5wt%Cu were deposited by sputtering from alloy targets onto NaCl substrates. The samples were solution heat treated at 748K for 30 min and aged at 523K for 4 h to promote equilibrium grain boundary segregation. EELS measurements were made using a Gatan 666 PEELS spectrometer interfaced to a VG HB501 STEM operating at 100 keV. The probe size was estimated to be 1 nm FWHM. Grain boundaries with the narrowest projected width were chosen for analysis. EDX measurements of Cu segregation were made using a VG HB603 STEM.

Electronic structure studies of conducting polymers by electron energy-loss spectroscopy

1996 ◽  
Vol 54 ◽  
pp. 160-161
Author(s):  
J. Fink
Keyword(s):  
Electronic Structure ◽  
Conducting Polymers ◽  
Conjugated Polymers ◽  
Electron Acceptors ◽  
Electron Donors ◽  
Light Emitting ◽  
One Dimensional ◽  
New Class ◽  
Electrical Conductivities ◽  
Electron Energy Loss

Conducting polymers comprises a new class of materials achieving electrical conductivities which rival those of the best metals. The parent compounds (conjugated polymers) are quasi-one-dimensional semiconductors. These polymers can be doped by electron acceptors or electron donors. The prototype of these materials is polyacetylene (PA). There are various other conjugated polymers such as polyparaphenylene, polyphenylenevinylene, polypoyrrole or polythiophene. The doped systems, i.e. the conducting polymers, have intersting potential technological applications such as replacement of conventional metals in electronic shielding and antistatic equipment, rechargable batteries, and flexible light emitting diodes.Although these systems have been investigated almost 20 years, the electronic structure of the doped metallic systems is not clear and even the reason for the gap in undoped semiconducting systems is under discussion.

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