Heterogeneous dynamics, correlated time and length scales in ionic deep eutectics: Anion and temperature dependence

2020 ◽  
Vol 153 (23) ◽  
pp. 234502
Author(s):  
Swarup Banerjee ◽  
Pradip Kr. Ghorai ◽  
Suman Das ◽  
Juriti Rajbangshi ◽  
Ranjit Biswas
Keyword(s):  
Temperature Dependence ◽  
Length Scales ◽  
Heterogeneous Dynamics

scholarly journals Electron glass effects in amorphous NbSi films

2020 ◽  
Vol 8 (4) ◽  
Author(s):  
Julien Delahaye ◽  
Thierry Grenet ◽  
Claire A. Marrache-Kikuchi ◽  
Vincent Humbert ◽  
Laurent Bergé ◽  
...  
Keyword(s):  
Thin Films ◽  
Temperature Dependence ◽  
Indium Oxide ◽  
Gate Voltage ◽  
Field Effect ◽  
Room Temperature ◽  
Discontinuous Systems ◽  
Length Scales ◽  
Fundamental Nature ◽  
Logarithmic Growth

We report on non equilibrium field effect in insulating amorphous NbSi thin films having different Nb contents and thicknesses. The hallmark of an electron glass, namely the logarithmic growth of a memory dip in conductance versus gate voltage curves, is observed in all the films after a cooling from room temperature to 4.2~K. A very rich phenomenology is demonstrated. While the memory dip width is found to strongly vary with the film parameters, as was also observed in amorphous indium oxide films, screening lengths and temperature dependence of the dynamics are closer to what is observed in granular Al films. Our results demonstrate that the differentiation between continuous and discontinuous systems is not relevant to understand the discrepancies reported between various systems in the electron glass features. We suggest instead that they are not of fundamental nature and stem from differences in the protocols used and in the electrical inhomogeneity length scales within each material.

A structural study and its relation to dynamics heterogeneity in a polymer glass former

Soft Matter ◽  
2021 ◽  
Author(s):  
Cristian Balbuena ◽  
Melisa Gianetti ◽  
Ezequiel Soule
Keyword(s):  
Relaxation Time ◽  
Temperature Dependence ◽  
Condensed Matter ◽  
Dynamical Behavior ◽  
Heterogeneous Dynamics ◽  
Arrhenius Temperature Dependence ◽  
Open Issue ◽  
Glassy Materials ◽  
The Relationship ◽  
Arrhenius Temperature

The relationship between structure and dynamical behavior (super-Arrhenius temperature dependence of relaxation time accompanied by heterogeneous dynamics) in glassy materials remains an open issue in the physics of condensed matter....

Temperature Dependence of the Critical Electron Dose for Fatty Acid Monolayers

1982 ◽  
Vol 40 ◽  
pp. 78-79
Author(s):  
Kenneth H. Downing ◽  
Robert M. Glaeser
Keyword(s):  
Electron Beam ◽  
Fatty Acid ◽  
Inelastic Scattering ◽  
Temperature Dependence ◽  
Structural Damage ◽  
Direct Result ◽  
Second Step ◽  
Strong Temperature Dependence ◽  
Electron Dose ◽  
Covalent Bonds

The structural damage of molecules irradiated by electrons is generally considered to occur in two steps. The direct result of inelastic scattering events is the disruption of covalent bonds. Following changes in bond structure, movement of the constituent atoms produces permanent distortions of the molecules. Since at least the second step should show a strong temperature dependence, it was to be expected that cooling a specimen should extend its lifetime in the electron beam. This result has been found in a large number of experiments, but the degree to which cooling the specimen enhances its resistance to radiation damage has been found to vary widely with specimen types.

Temperature Dependence of Magnetic Domains and Wall Structures

1972 ◽  
Vol 30 ◽  
pp. 496-497
Author(s):  
Sonoko Tsukahara ◽  
Tadami Taoka ◽  
Hisao Nishizawa
Keyword(s):  
Temperature Dependence ◽  
Domain Walls ◽  
Magnetic Domain ◽  
Iron Film ◽  
Objective Lens ◽  
Lorentz Microscopy ◽  
Domain Structures ◽  
Wall Structures ◽  
Crystal Films ◽  
Metallurgical Structure

The high voltage Lorentz microscopy was successfully used to observe changes with temperature; of domain structures and metallurgical structures in an iron film set on the hot stage combined with a goniometer. The microscope used was the JEM-1000 EM which was operated with the objective lens current cut off to eliminate the magnetic field in the specimen position. Single crystal films with an (001) plane were prepared by the epitaxial growth of evaporated iron on a cleaved (001) plane of a rocksalt substrate. They had a uniform thickness from 1000 to 7000 Å.The figure shows the temperature dependence of magnetic domain structure with its corresponding deflection pattern and metallurgical structure observed in a 4500 Å iron film. In general, with increase of temperature, the straight domain walls decrease in their width (at 400°C), curve in an iregular shape (600°C) and then vanish (790°C). The ripple structures with cross-tie walls are observed below the Curie temperature.

Temperature dependence of generation-recombination noise in p-n junctions

2002 ◽  
Vol 12 (3) ◽  
pp. 71-74
Author(s):  
J. A. Jiménez Tejada ◽  
A. Godoy ◽  
A. Palma ◽  
P. Cartujo
Keyword(s):  
Temperature Dependence
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