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X‐Ray Spectra, Energy Band Structure, and Superconductivity of V 3 X‐Type Compounds
Author(s) -
Nemov S. A.,
Kurmaev E. Z.,
Belash V. P.
Publication year - 1970
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.19700390106
Subject(s) - superconductivity , valence (chemistry) , vanadium , metal , crystal structure , electronic band structure , electronic structure , spectral line , atom (system on chip) , materials science , crystallography , valence band , atomic physics , chemistry , condensed matter physics , band gap , physics , computational chemistry , organic chemistry , astronomy , computer science , embedded system , metallurgy
X‐ray K‐emission bands of the metal atoms from Me 3 X‐compounds (V 3 Ga, V 3 Si, V 3 Ge, Cr 3 Si) are investigated. A multiple‐band structure of the energy spectrum is found characterized by a number of overlapping bands related to non‐metallic s‐, p‐, and metallic dp‐states. The results of theoretical calculations for V 3 Ga, V 3 Si, and V 3 Ge (Mattheiss [9]) are found to correlate well with experimental data. Some deviations, especially in the lower part of valence band are attributed to the choice of the crystal potential. On the basis of experimental results it seems possible to suggest theoretical calculations using a crystal potential corresponding to the 3d 3 4s 2 vanadium atom configuration. The relationship between the electronic structure of Me 3 X‐compounds and the change of their superconducting properties is discussed.