scholarly journals Electronic structure of the Chevrel-phase compoundsSnxMo6Se7.5:Photoemission spectroscopy and band-structure calculations

2001 ◽  
Vol 63 (19) ◽  
Author(s):  
K. Kobayashi ◽  
A. Fujimori ◽  
T. Ohtani ◽  
I. Dasgupta ◽  
O. Jepsen ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Band Structure ◽  
Photoemission Spectroscopy ◽  
Chevrel Phase ◽  
Band Structure Calculations ◽  
Structure Calculations

Electronic structure ofNaxCu1−xIn5S8compounds: X-ray photoemission spectroscopy study and band structure calculations

2008 ◽  
Vol 78 (23) ◽  
Author(s):  
Catherine Guillot-Deudon ◽  
Sylvie Harel ◽  
Arezki Mokrani ◽  
Alain Lafond ◽  
Nicolas Barreau ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Band Structure ◽  
Photoemission Spectroscopy ◽  
Spectroscopy Study ◽  
X Ray ◽  
Band Structure Calculations ◽  
Structure Calculations

Specific Peculiarities of the Electronic Structure of SrPb3Br8 As Evidenced from First-Principles DFT Band-Structure Calculations

2019 ◽  
Vol 48 (5) ◽  
pp. 3059-3068 ◽  
Author(s):  
O. Y. Khyzhun ◽  
V. L. Bekenev ◽  
N. M. Denysyuk ◽  
L. I. Isaenko ◽  
A. P. Yelisseyev ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Band Structure ◽  
First Principles ◽  
Band Structure Calculations ◽  
Structure Calculations

The electronic structure of disordered system

1964 ◽  
Vol 279 (1376) ◽  
pp. 82-97 ◽  
Keyword(s):  
Electronic Structure ◽  
Band Structure ◽  
Density Of States ◽  
Disordered System ◽  
Perfect Lattice ◽  
Geometric Approximation ◽  
Band Structure Calculations ◽  
Interacting Electrons ◽  
Simplifying Assumptions ◽  
Structure Calculations

A general expression is written down for the density of states of non-interacting electrons in a disordered system. The expression is obtained on the basis of two simplifying assumptions; the geometric approximation, which is connected with the disorder, and an approximation concerning the potential which is commonly used in band structure calculations. In the case of a perfect lattice the result of Kohn & Rostoker (1954) for the band structure of the lattice is derived, and details of the density of states are available from the formula thus obtained. It is shown how the change in the energy of the electrons due to the presence of a phonon can be obtained.

Low Energy K-Dependent Electronic Structure of the Layered Magnetoresistive Oxide La1.2Sr1.8Mn2O7

1997 ◽  
Vol 494 ◽  
Author(s):  
T. Saitoh ◽  
D. S. Dessau ◽  
C.-H. Park ◽  
Z.-X. Shen ◽  
P. Villella ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Band Structure ◽  
Current System ◽  
Coupling Model ◽  
Local Spin Density Approximation ◽  
Energy Bands ◽  
Strong Electron ◽  
Colossal Magnetoresistive ◽  
Band Structure Calculations ◽  
Structure Calculations

ABSTRACTWe have studied the fc-dependent electronic structure of the layered colossal magnetoresistive manganite La1.2Sr1.8Mn2O7 using high-resolution angle-resolved photoemission spectroscopy. We found dispersive energy bands as a function of the crystal momentum k near the Fermi level (EF). We have also performed local spin density approximation (LSDA)+U band-structure calculations on the current system. The overall experimental dispersion relation is basically in agreement with the band-structure calculations yet close to EF there is a significant deviation from the predicted dispersions. Instead of clear Fermi-surface (FS) crossings, we observe a depression of the features as the FS is approached as if there is a “pseudo” gap in the excitation spectrum. The pseudogap continuously opens with temperature and does not show further significant opening above Tc, corresponding to the metal-insulator transition. Those unusual aspects of the spectra has been discussed from the viewpoint of the strong electron-lattice coupling model.

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