scholarly journals Relativistic Electronic Band Structure and Properties of the Heavier Actinides: A Second Rare-Earth Series

1973 ◽  
Author(s):  
D. D. Koelling ◽  
A. J. Freeman ◽  
Hugh C. Wolfe ◽  
C. D. Graham ◽  
J. J. Rhyne
Keyword(s):  
Rare Earth ◽  
Band Structure ◽  
Electronic Band Structure ◽  
Structure And Properties ◽  
Electronic Band ◽  
Rare Earth Series

Composition, chemical structure, and electronic band structure of rare earth oxide/Si(100) interfacial transition layer

2004 ◽  
Vol 72 (1-4) ◽  
pp. 283-287 ◽  
Author(s):  
T Hattori ◽  
T Yoshida ◽  
T Shiraishi ◽  
K Takahashi ◽  
H Nohira ◽  
...  
Keyword(s):  
Rare Earth ◽  
Band Structure ◽  
Transition Layer ◽  
Chemical Structure ◽  
Electronic Band Structure ◽  
Rare Earth Oxide ◽  
Electronic Band

scholarly journals Electronic Structure of the Rare-Earth Nitrides

2021 ◽  
Author(s):  
◽  
A. R. H. Preston
Keyword(s):  
Electronic Structure ◽  
Rare Earth ◽  
Band Structure ◽  
Electronic Band Structure ◽  
Electronic Band ◽  
X Ray ◽  
Rare Earth Nitrides ◽  
Wide Range ◽  
X Ray Absorption ◽  
The Rare Earth

<p>The rare-earth nitrides (ReNs) are a class of novel materials with potential for use in spintronics applications. Theoretical studies indicate that among the ReNs there could be half-metals, semimetals and semiconductors, all exhibiting strong magnetic ordering. This is because of the complex interaction between the partially filled rare-earth 4f orbital and the nitrogen 2p valence and rare-earth 5d conduction bands. This thesis uses experimental and theoretical techniques to probe the ReN electronic structure. Thin films of SmN, EuN, GdN, DyN, LuN and HfN have been produced for study. Basic characterization shows that the films are of a high quality. The result of electrical transport, magnetometry, and optical and x-ray spectroscopy are interpreted to provide information on the electronic structure. SmN, GdN, DyN are found to be semiconductors in their ferromagnetic ground state while HfN is a metal. Results are compared with density functional theory (DFT) based calculations. The free parameters resulting from use of the local spin density approximation with Hubbard-U corrections as the exchange-correlation functional are adjusted to reach good agreement with x-ray absorption and emission spectroscopy at the nitrogen K-edge. Resonant x-ray emission is used to experimentally measure valence band dispersion of GdN. No evidence of the rare-earth 4f levels is found in any of the K-edge spectroscopy, which is consistent with the result of M-edge x-ray absorption which show that the 4f wave function of the rare-earths in the ReNs are very similar to those of rare-earth metal. An auxillary resonant x-ray emission study of ZnO is used to map the dispersion of the electronic band structure across a wide range of the Brillouin zone. The data, and calculations based on GW corrections to DFT, together provide a detailed picture of the bulk electronic band structure.</p>

scholarly journals Electronic Structure of the Rare-Earth Nitrides

2021 ◽  
Author(s):  
◽  
A. R. H. Preston
Keyword(s):  
Electronic Structure ◽  
Rare Earth ◽  
Band Structure ◽  
Electronic Band Structure ◽  
Electronic Band ◽  
X Ray ◽  
Rare Earth Nitrides ◽  
Wide Range ◽  
X Ray Absorption ◽  
The Rare Earth

<p>The rare-earth nitrides (ReNs) are a class of novel materials with potential for use in spintronics applications. Theoretical studies indicate that among the ReNs there could be half-metals, semimetals and semiconductors, all exhibiting strong magnetic ordering. This is because of the complex interaction between the partially filled rare-earth 4f orbital and the nitrogen 2p valence and rare-earth 5d conduction bands. This thesis uses experimental and theoretical techniques to probe the ReN electronic structure. Thin films of SmN, EuN, GdN, DyN, LuN and HfN have been produced for study. Basic characterization shows that the films are of a high quality. The result of electrical transport, magnetometry, and optical and x-ray spectroscopy are interpreted to provide information on the electronic structure. SmN, GdN, DyN are found to be semiconductors in their ferromagnetic ground state while HfN is a metal. Results are compared with density functional theory (DFT) based calculations. The free parameters resulting from use of the local spin density approximation with Hubbard-U corrections as the exchange-correlation functional are adjusted to reach good agreement with x-ray absorption and emission spectroscopy at the nitrogen K-edge. Resonant x-ray emission is used to experimentally measure valence band dispersion of GdN. No evidence of the rare-earth 4f levels is found in any of the K-edge spectroscopy, which is consistent with the result of M-edge x-ray absorption which show that the 4f wave function of the rare-earths in the ReNs are very similar to those of rare-earth metal. An auxillary resonant x-ray emission study of ZnO is used to map the dispersion of the electronic band structure across a wide range of the Brillouin zone. The data, and calculations based on GW corrections to DFT, together provide a detailed picture of the bulk electronic band structure.</p>

Electronic band structure and properties of the solid solution Eu1–x Fe x O

2015 ◽  
Vol 57 (11) ◽  
pp. 2173-2178
Author(s):  
O. V. Anoshina ◽  
V. P. Zhukov ◽  
A. S. Borukhovich
Keyword(s):  
Solid Solution ◽  
Band Structure ◽  
Electronic Band Structure ◽  
Structure And Properties ◽  
Electronic Band

scholarly journals Electronic band structure and properties of α-U

1979 ◽  
Vol 40 (C4) ◽  
pp. C4-134-C4-135 ◽  
Author(s):  
A. J. Freeman ◽  
D. D. Koelling ◽  
T. J. Watson Yang
Keyword(s):  
Band Structure ◽  
Electronic Band Structure ◽  
Structure And Properties ◽  
Electronic Band
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