scholarly journals Numerical observation of a glassy phase in the three-dimensional Coulomb glass

2019 ◽  
Vol 100 (10) ◽  
Author(s):  
Amin Barzegar ◽  
Juan Carlos Andresen ◽  
Moshe Schechter ◽  
Helmut G. Katzgraber
Keyword(s):  
Glassy Phase ◽  
Three Dimensional ◽  
Coulomb Glass

scholarly journals Heterogeneous dynamics of the three-dimensional Coulomb glass out of equilibrium

2005 ◽  
Vol 71 (2) ◽  
Author(s):  
Alejandro B. Kolton ◽  
D. R. Grempel ◽  
Daniel Domínguez
Keyword(s):  
Three Dimensional ◽  
Heterogeneous Dynamics ◽  
Coulomb Glass

LOW ENERGY EXCITATIONS AND NON-ERGODICITY IN THE COULOMB GLASS

1994 ◽  
Vol 08 (07) ◽  
pp. 923-933 ◽  
Author(s):  
M. Ortuño ◽  
M. Pollak ◽  
J. Talamantes
Keyword(s):  
Relaxation Time ◽  
Low Temperatures ◽  
Random Media ◽  
Three Dimensional ◽  
Low Energy ◽  
Zero Temperature ◽  
Correlation Effects ◽  
Interacting Particles ◽  
Coulomb Glass

Recent computational methods permit the determination of the low energy states of fair sized systems of localized interacting particles in random media. Making use of such methods, this paper evaluates the nature of the low-energy excitations of the system, and it’s implications on conductivity and on ergodicity. Two- and three-dimensional systems are examined. It is found that the low energy excitations exhibit strong correlation effects, indicating that one-particle theories for equilibrium and non-equilibrium properties are not justified. Ergodicity is tested by relaxation at zero temperature. It is found that relaxation time can be extremely long, indicating that the system is not ergodic at low temperatures.

Charge Generation and Transport in CdSe Semiconductor Quantum Dot Solids

1999 ◽  
Vol 571 ◽  
Author(s):  
C. A. Leatherdale ◽  
N.Y. Morgan ◽  
C. R. Kagan ◽  
S. A. Empedocles ◽  
M. G. Bawendi ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Surface Passivation ◽  
Three Dimensional ◽  
Coulomb Energy ◽  
Charge Generation ◽  
Electron Hole ◽  
Initial Separation ◽  
Electron Hole Pair ◽  
Coulomb Glass ◽  
Current Transients

ABSTRACTWe demonstrate photoconductivity and conductivity in three-dimensional close-packed solids of colloidal CdSe quantum dots. We observe quantum dot size and surface passivation dependent photoconductivity that can be qualitatively understood by considering the energy required in order to overcome the Coulomb energy of the initial electron-hole pair. Our results suggest that surface ligands that promote initial separation of the electron and hole reduce the electric field required for the onset of the photocurrent. The dark conductance is much smaller than the photoconductance. Hysteretic behaviour and extremely long-lived current transients are observed in the dark current that are suggestive of Coulomb-glass behaviour.

scholarly journals Relaxation dynamics of the three-dimensional Coulomb glass model

2021 ◽  
Vol 103 (3) ◽  
Author(s):  
Preeti Bhandari ◽  
Vikas Malik ◽  
Deepak Kumar ◽  
Moshe Schechter
Keyword(s):  
Three Dimensional ◽  
Relaxation Dynamics ◽  
Glass Model ◽  
Coulomb Glass

The orbit of Pluto over a long interval of time

1966 ◽  
Vol 25 ◽  
pp. 227-229 ◽  
Author(s):  
D. Brouwer
Keyword(s):  
Periodic Orbit ◽  
Numerical Integration ◽  
Restricted Problem ◽  
Three Dimensional ◽  
The Third ◽  
Circular Restricted Problem ◽  
Resonance Relation

The paper presents a summary of the results obtained by C. J. Cohen and E. C. Hubbard, who established by numerical integration that a resonance relation exists between the orbits of Neptune and Pluto. The problem may be explored further by approximating the motion of Pluto by that of a particle with negligible mass in the three-dimensional (circular) restricted problem. The mass of Pluto and the eccentricity of Neptune's orbit are ignored in this approximation. Significant features of the problem appear to be the presence of two critical arguments and the possibility that the orbit may be related to a periodic orbit of the third kind.

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