Electron Momentum Distribution of Terbium by Compton Scattering Technique

2004 ◽  
Vol 59 (12) ◽  
pp. 927-932 ◽  
Author(s):  
B. L. Ahuja ◽  
H. Malhotra ◽  
M. Sharma
Keyword(s):  
Band Structure ◽  
Gamma Rays ◽  
Momentum Distribution ◽  
Free Electron ◽  
Experimental Investigations ◽  
Compton Profile ◽  
Electron Momentum ◽  
Band Structure Calculations ◽  
Scattering Technique ◽  
Structure Calculations

We present the experimental Compton profile of polycrystalline terbium, using 661.65 keV gamma-rays, emitted by 20 Ci137Cs. In the absence of band structure calculations, theoretical computations have been made using renormalised-free-atom (RFA) and free electron based profiles. It is seen that the RFA results with e−-e− correlation correction agree relatively better with the experiment. The data are interpreted in terms of spd-f hybridization in the valence state of terbium. From the RFA profile, we have also derived the cohesive energy of terbium, which is compared with other band structures and experimental investigations. - PACs Nos. 13.60.F, 71.15.Nc, 78.70. -g, 78.70.Ck

Electron Momentum Density In Europium Using A 137Cs Compton Spectrometer

2005 ◽  
Vol 60 (7) ◽  
pp. 512-516
Author(s):  
Babu Lal Ahuja ◽  
Harsh Malhotra ◽  
Sonal Mathur
Keyword(s):  
Experimental Data ◽  
Band Structure ◽  
Gamma Rays ◽  
Free Electron ◽  
Cohesive Energy ◽  
Momentum Density ◽  
Compton Profile ◽  
Electron Momentum ◽  
Electron Models ◽  
Derivatives Of

The isotropic Compton profile of europium, the most reactive lanthanide, has been measured at a resolution of 0.40 a.u. using 661.65 keV gamma-rays. In the absence of a band structure-based Compton profile, the experimental data are compared with renormalised-free-atom (RFA) and free electron models. It is seen that the RFA model with e−-e− correlation agrees better with the experiment than the free electron models. The first derivatives of the Compton profiles show the hybridization effects of s-, p-, d-, f-electrons. From our RFA data we have also computed the cohesive energy of europium. PACS: 13.60.F, 71.15.Nc, 78.70. -g, 78.70.Ck

scholarly journals Fermi surface of the skutterudite CoSb3 : Quantum oscillations and band-structure calculations

2021 ◽  
Vol 103 (8) ◽  
Author(s):  
M. Naumann ◽  
P. Mokhtari ◽  
Z. Medvecka ◽  
F. Arnold ◽  
M. Pillaca ◽  
...  
Keyword(s):  
Band Structure ◽  
Fermi Surface ◽  
Quantum Oscillations ◽  
Band Structure Calculations ◽  
Structure Calculations

Extrinsic photonic band structure calculations of a doped semiconductor under an external magnetic field

2008 ◽  
Vol 372 (31) ◽  
pp. 5224-5228 ◽  
Author(s):  
Renlong Zhou ◽  
Xuewen Wang ◽  
Bingju Zhou ◽  
Yongyi Gao ◽  
Xiaojuan Liu ◽  
...  
Keyword(s):  
Magnetic Field ◽  
External Magnetic Field ◽  
Band Structure ◽  
Photonic Band Structure ◽  
Band Structure Calculations ◽  
Photonic Band ◽  
Structure Calculations
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