Electronic structure and magnetic properties of double perovskites Sr2FeMO6 (M = Sc, Ti, ..., Ni, Cu) according to the data of FLAPW-GGA band structure calculations

2008 ◽  
Vol 49 (5) ◽  
pp. 781-787 ◽  
Author(s):  
V. V. Bannikov ◽  
I. R. Shein ◽  
V. L. Kozhevnikov ◽  
A. L. Ivanovskii
2019 ◽  
Vol 48 (5) ◽  
pp. 3059-3068 ◽  
Author(s):  
O. Y. Khyzhun ◽  
V. L. Bekenev ◽  
N. M. Denysyuk ◽  
L. I. Isaenko ◽  
A. P. Yelisseyev ◽  
...  

2008 ◽  
Vol 78 (23) ◽  
Author(s):  
Catherine Guillot-Deudon ◽  
Sylvie Harel ◽  
Arezki Mokrani ◽  
Alain Lafond ◽  
Nicolas Barreau ◽  
...  

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.


1997 ◽  
Vol 494 ◽  
Author(s):  
T. Saitoh ◽  
D. S. Dessau ◽  
C.-H. Park ◽  
Z.-X. Shen ◽  
P. Villella ◽  
...  

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.


2000 ◽  
Vol 14 (2) ◽  
pp. 281-286 ◽  
Author(s):  
V.R. Galakhov ◽  
M.A. Korotin ◽  
N.A. Ovechkina ◽  
E.Z. Kurmaev ◽  
V.S. Gorshkov ◽  
...  

1994 ◽  
Vol 50 (24) ◽  
pp. 18330-18340 ◽  
Author(s):  
S. Eisebitt ◽  
J.-E. Rubensson ◽  
M. Nicodemus ◽  
T. Böske ◽  
S. Blügel ◽  
...  

Sign in / Sign up

Export Citation Format

Share Document