scholarly journals De-localization of Bond Eigenfunctions in π-Electronic Systems. I. Proposal of an Approximate Method for the Calculation of the π-Electronic States of Molecules

1962 ◽  
Vol 35 (2) ◽  
pp. 355-360 ◽  
Author(s):  
Shozaburo Takekiyo
Keyword(s):  
Approximate Method ◽  
Electronic States ◽  
Electronic Systems

scholarly journals Solid-state structure and electronic states of hydrogen-bonded dimer of pyridyl-substituted tetrathiafulvalene salted with PF6−

RSC Advances ◽  
2017 ◽  
Vol 7 (11) ◽  
pp. 6236-6241 ◽  
Author(s):  
Tomoaki Kanetou ◽  
Ryo Tsunashima ◽  
Norihisa Hoshino ◽  
Tomoyuki Akutagawa
Keyword(s):  
Hydrogen Bond ◽  
Hydrogen Bonding ◽  
Dipole Moment ◽  
Solid State ◽  
Electric Dipole Moment ◽  
Electric Dipole ◽  
Electronic States ◽  
Electronic Systems ◽  
State Structure ◽  
Solid State Structure

Our results clarified uniqueness in hydrogen bonding TTFPy dimer in which proton in hydrogen bond was thermally fluctuated. In addition, the fluctuation was coupled with π-electronic systems of TTF moiety where electric dipole moment was amplified.

scholarly journals Electron-hole hybridization in bilayer graphene

2019 ◽  
Vol 7 (2) ◽  
pp. 248-253
Author(s):  
Siqi Wang ◽  
Mervin Zhao ◽  
Changjian Zhang ◽  
Sui Yang ◽  
Yuan Wang ◽  
...  
Keyword(s):  
Optical Lattices ◽  
Electronic States ◽  
Bilayer Graphene ◽  
Electronic Systems ◽  
Layered Systems ◽  
Electron Hole ◽  
Periodic Potentials ◽  
Fundamental Research ◽  
Similar Band ◽  
First Time

Abstract Band structure determines the motion of electrons in a solid, giving rise to exotic phenomena when properly engineered. Drawing an analogy between electrons and photons, artificially designed optical lattices indicate the possibility of a similar band modulation effect in graphene systems. Yet due to the fermionic nature of electrons, modulated electronic systems promise far richer categories of behaviors than those found in optical lattices. Here, we uncovered a strong modulation of electronic states in bilayer graphene subject to periodic potentials. We observed for the first time the hybridization of electron and hole sub-bands, resulting in local band gaps at both primary and secondary charge neutrality points. Such hybridization leads to the formation of flat bands, enabling the study of correlated effects in graphene systems. This work may provide a novel way to manipulate electronic states in layered systems, which is important to both fundamental research and application.

Experimental and theoretical aspects of thermodynamic properties of quasi-1D and quasi-2D organic conductors and superconductors

2018 ◽  
Vol 32 (17) ◽  
pp. 1840036 ◽  
Author(s):  
Y. Nakazawa ◽  
S. Kruchinin
Keyword(s):  
Thermodynamic Properties ◽  
Electronic States ◽  
Organic Conductors ◽  
Organic Superconductors ◽  
Charge Transfer Complexes ◽  
Electronic Systems ◽  
Research Areas ◽  
Interacting Systems ◽  
Lattice Coupling ◽  
Low Dimensional

We deal with thermodynamic features of organic conductors and superconductors where itinerant [Formula: see text]-electrons/holes released from organic molecules are playing essential roles for electronic properties. Since they are low-dimensional electronic systems with relatively soft lattice framework, they show variety of phenomena related to electron correlations and electron–lattice coupling. The drastic changes of conductive and magnetic properties owing to quantum features of [Formula: see text]-electrons can be induced by external perturbations such as magnetic/electric field, pressure, etc. It is especially emphasized that the possible mechanism and relation with other phenomena of the superconductivity in [Formula: see text]-electrons system remains to be one of the interesting research areas in fundamental condensed matter science. In this review paper, we consider several topics of organic conductors and superconductors from the standpoints of thermodynamic experiments, data analyses and theories performed up to now. Starting from the overall picture of the electronic states in charge transfer complexes, thermodynamic properties of the quasi-one-dimensional systems, quasi-two-dimensional systems and [Formula: see text]–d interacting systems are reviewed. The thermodynamic parameters of the superconductive compounds in them are compared and discussed. The relations with crystal structures, electronic states, phase diagram and other experiments are also discussed in comparison with these thermodynamic properties. The possible pairing symmetries in organic superconductors and some models are mentioned in the last part. This review deals with a wide scope of theoretical and experimental topics in superconductivity in molecule-based conductive systems.

Hybridized Electronic States in Dense Intermetallics as Studied by ESR

2011 ◽  
Vol 170 ◽  
pp. 170-173 ◽  
Author(s):  
Vladimir A. Ivanshin ◽  
T.O. Litvinova ◽  
A.A. Sukhanov ◽  
N.A. Ivanshin ◽  
B. Endeward
Keyword(s):  
Electron Spin Resonance ◽  
Electron Spin ◽  
Electronic States ◽  
Electronic Systems ◽  
Theoretical Studies ◽  
Strongly Correlated ◽  
Rkky Interaction ◽  
Conduction Electrons ◽  
Strongly Correlated Electronic Systems ◽  
Spin Resonance

We review electron spin resonance (ESR) experiments in several concentrated Yb-, Ce-, and Eu-based intermetallic systems. Recent theoretical studies attribute well resolved ESR signals with hybridization effects between 4f and conduction electrons (CE) in the presence of ferromagnetic (FM) fluctuations. We believe that the ESR absorption is caused here by a novel type of ESR excitations – hybridized electronic states, which are created in some strongly correlated electronic systems due to hybridization between the 4f-orbitals and the wavefunctions of the CE of the outer d, s, and p shells in conjunction with FM RKKY interaction.

Integration of Core-Edge Spectroscopy Methods for the Study of Polymers

1996 ◽  
Vol 54 ◽  
pp. 154-155
Author(s):  
E. G. Rightor
Keyword(s):  
Excited State ◽  
Polymer Blends ◽  
Gas Phase ◽  
Spatial Resolution ◽  
High Spatial Resolution ◽  
Electronic States ◽  
Core Electron ◽  
Bulk Solids ◽  
Development Application

Core edge spectroscopy methods are versatile tools for investigating a wide variety of materials. They can be used to probe the electronic states of materials in bulk solids, on surfaces, or in the gas phase. This family of methods involves promoting an inner shell (core) electron to an excited state and recording either the primary excitation or secondary decay of the excited state. The techniques are complimentary and have different strengths and limitations for studying challenging aspects of materials. The need to identify components in polymers or polymer blends at high spatial resolution has driven development, application, and integration of results from several of these methods.

Electronic States near the Fermi Level in the Antiferromagnetic and Ferromagnetic Spinels of Zn 1− x Cu x Cr 2 Se 4 ; 0.0 ≤ x ≤ 1.0

2002 ◽  
Vol 75 (4-5) ◽  
pp. 359-371
Author(s):  
M. Hidaka ◽  
N. Tokiwa ◽  
M. Yoshimura ◽  
H. Fujii ◽  
Jae-Young Choi ◽  
...  
Keyword(s):  
Fermi Level ◽  
Electronic States
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