Temperature dependence of the spectral weight in undoped Mott insulators

2001 ◽  
Vol 63 (15) ◽  
Author(s):  
Vadim Oganesyan
Keyword(s):  
Temperature Dependence ◽  
Spectral Weight ◽  
Mott Insulators

scholarly journals ONE-ELECTRON SPECTRAL WEIGHT OF DOPED MOTT INSULATORS IN GAUGE FIELD THEORY APPROACH

1996 ◽  
Vol 10 (27) ◽  
pp. 3727-3736
Author(s):  
H.C. LEE
Keyword(s):  
Field Theory ◽  
Gauge Field ◽  
Spectral Weight ◽  
Low Energy ◽  
Vertex Correction ◽  
Gauge Field Theory ◽  
Mott Insulators ◽  
Theory Approach ◽  
Two Dimensional ◽  
Second Order Perturbation Theory

The electron spectral weight of doped Mott insulators based on the two-dimensional slave boson gauge field theory is studied. The vertex correction with static gauge field is calculated in the second order perturbation theory. The vertex correction is found to be singular at low energy and requires non-perturbative treatments.

Spectral Weight Transfer of the Optical Conductivity in Doped Mott Insulators

1995 ◽  
Vol 75 (19) ◽  
pp. 3497-3500 ◽  
Author(s):  
T. Katsufuji ◽  
Y. Okimoto ◽  
Y. Tokura
Keyword(s):  
Optical Conductivity ◽  
Spectral Weight ◽  
Mott Insulators ◽  
Weight Transfer

Temperature Dependence of the Optical Spectral Weight in the Cuprates: Role of Electron Correlations

2005 ◽  
Vol 95 (9) ◽  
Author(s):  
A. Toschi ◽  
M. Capone ◽  
M. Ortolani ◽  
P. Calvani ◽  
S. Lupi ◽  
...  
Keyword(s):  
Temperature Dependence ◽  
Spectral Weight ◽  
Electron Correlations

scholarly journals Unusual temperature dependence of the spectral weight near the Fermi level of NdNiO3thin films

2012 ◽  
Vol 86 (19) ◽  
Author(s):  
E. F. Schwier ◽  
R. Scherwitzl ◽  
Z. Vydrovà ◽  
M. García-Fernández ◽  
M. Gibert ◽  
...  
Keyword(s):  
Fermi Level ◽  
Temperature Dependence ◽  
Spectral Weight

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.

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