Author:
Karaca E.,Byrne P. J. P.,Hasnip P. J.,Probert M. I. J.
Abstract
AbstractA high-throughput computational method is used to predict 39 new superconductors in the Ti-based M$$_2$$
2
AX phases, and the best candidates are then studied in more detail using density functional theory electron–phonon coupling calculations. The detailed calculations agree with the simple predictions, and Ti$$_2$$
2
AlX (X: B, C and N) materials are predicted to have higher values of $$T_c$$
T
c
than any currently known hexagonal M$$_2$$
2
AX phases. The electronic states at the Fermi level are dominated by the Ti 3d states. The choice of X (X: B, C and N) has a significant impact on the electronic density of states but not on the phonon characteristics. The electron–phonon coupling parameter for Ti$$_2$$
2
AlX (X: B, C and N) was determined to be 0.685, 0.743 and 0.775 with a predicted $$T_c$$
T
c
of 7.8 K, 10.8 K and 13.0 K, respectively.
Funder
TU ̈BI ̇TAK
Engineering and Physical Sciences Research Council
Publisher
Springer Science and Business Media LLC
Cited by
7 articles.
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