Formulation of a New Theory for Optical Response and Exciton Effects in Insulating States Coming from Strong Electron-Phonon and Inter-Electron Interactions

1996 ◽  
Vol 65 (7) ◽  
pp. 2285-2296 ◽  
Author(s):  
Keiichiro Nasu
Keyword(s):  
Optical Response ◽  
Strong Electron ◽  
Electron Interactions

scholarly journals Dynamic response of a mesoscopic capacitor in the presence of strong electron interactions

2010 ◽  
Vol 81 (15) ◽  
Author(s):  
Yuji Hamamoto ◽  
Thibaut Jonckheere ◽  
Takeo Kato ◽  
Thierry Martin
Keyword(s):  
Dynamic Response ◽  
Strong Electron ◽  
Electron Interactions

scholarly journals Electrochemical properties and optical response of cadmium selenide quantum dot film electrodes

2021 ◽  
Vol 57 (2) ◽  
pp. 144-151
Author(s):  
Y. M. Aniskevich ◽  
A. V. Radchanka ◽  
M. V. Artemyev ◽  
G. A. Ragoisha ◽  
E. A. Streltsov
Keyword(s):  
Quantum Dot ◽  
Color Change ◽  
Optical Response ◽  
Acetonitrile Solution ◽  
Strong Electron ◽  
Glass Substrates ◽  
Transparent Conducting ◽  
Gas Atmosphere ◽  
In Situ Absorption

Electrochemical charge/discharge mechanisms in the electrophoretically deposited CdSe quantum dot (QD)film electrodes in NBu4PF6 acetonitrile solution have been investigated. The films were deposited from CdSe colloidal solution in nitrobenzene at variable QD size (diameter) from 3.4 to 6.3 nm onto transparent conducting glass substrates. Electrochemical behavior and optical response were characterized by cyclic voltammetry (CV) and in situ absorption spectroscopy. Electrochemical charging under an inert gas atmosphere results in a reversible color change (electrochromism), due to the bleach of exciton absorption with 0.3 optical density changes. The mechanism of electrochemical charging comprises electron transfer from conducting substrate to QD, interparticle transfer and also electron capturing by acceptors in solution. The introduction of a strong electron acceptor (O2) into the solution results in a suppression of electrochromism. The influence of oxygen is rather reversible which is observed from recovered electrochromic behavior after electrolyte resaturation with argon.

scholarly journals Formation of Hubbard-like bands as a fingerprint of strong electron-electron interactions in FeSe

2017 ◽  
Vol 95 (8) ◽  
Author(s):  
Matthew D. Watson ◽  
Steffen Backes ◽  
Amir A. Haghighirad ◽  
Moritz Hoesch ◽  
Timur K. Kim ◽  
...  
Keyword(s):  
Strong Electron ◽  
Electron Interactions

Loading FeOOH on Ni(OH)2 hollow nanorods to obtain a three-dimensional sandwich catalyst with strong electron interactions for an efficient oxygen evolution reaction

Nanoscale ◽  
2020 ◽  
Vol 12 (2) ◽  
pp. 983-990 ◽  
Author(s):  
Wenjun Guo ◽  
Dandan Li ◽  
Dazhong Zhong ◽  
Shuai Chen ◽  
Genyan Hao ◽  
...  
Keyword(s):  
Water Splitting ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Three Dimensional ◽  
Precious Metals ◽  
Sustainable Production ◽  
Strong Electron ◽  
Highly Efficient ◽  
Production Of Hydrogen ◽  
Electron Interactions

Sustainable production of hydrogen by water splitting requires the exploration of highly efficient electrocatalysts from abundant non-precious metals on Earth.

scholarly journals On the Role of Local Many-Body Interactions on the Thermoelectric Properties of Fullerene Junctions

Entropy ◽  
2019 ◽  
Vol 21 (8) ◽  
pp. 754
Author(s):  
Carmine Antonio Perroni ◽  
Vittorio Cataudella
Keyword(s):  
Thermoelectric Properties ◽  
Coulomb Blockade ◽  
Degrees Of Freedom ◽  
Chemical Potential ◽  
Local Electron ◽  
Strong Electron ◽  
Adiabatic Approach ◽  
Many Body Interactions ◽  
Electron Interactions

The role of local electron–vibration and electron–electron interactions on the thermoelectric properties of molecular junctions is theoretically analyzed focusing on devices based on fullerene molecules. A self-consistent adiabatic approach is used in order to obtain a non-perturbative treatment of the electron coupling to low frequency vibrational modes, such as those of the molecule center of mass between metallic leads. The approach also incorporates the effects of strong electron–electron interactions between molecular degrees of freedom within the Coulomb blockade regime. The analysis is based on a one-level model which takes into account the relevant transport level of fullerene and its alignment to the chemical potential of the leads. We demonstrate that only the combined effect of local electron–vibration and electron–electron interactions is able to predict the correct behavior of both the charge conductance and the Seebeck coefficient in very good agreement with available experimental data.

scholarly journals Strong electron-electron interactions in Si/SiGe quantum dots

2021 ◽  
Vol 104 (23) ◽  
Author(s):  
H. Ekmel Ercan ◽  
S. N. Coppersmith ◽  
Mark Friesen
Keyword(s):  
Quantum Dots ◽  
Strong Electron ◽  
Electron Interactions
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