Fermi-level Dirac crossings in 4d and 5d cubic metal oxides: NaPd3O4 and NaPt3O4
Fermi-level Dirac crossings in 4d and 5d cubic metal oxides: NaPd3O4 and NaPt3O4
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DOI:
10.1103/physrevb.99.195148
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发表时间:
2019-05
影响因子:
3.7
通讯作者:
S. Teicher;Leo K. Lamontagne;L. Schoop;R. Seshadri
中科院分区:
文献类型:
--
作者:
S. Teicher;Leo K. Lamontagne;L. Schoop;R. Seshadri
The cubic oxide metals(or Pt) crystallize in the nonsymmorphicspace group. First-principles calculations are employed here to understand the role of thesquare planes andinteractions in the development of the electronic structure. The compounds host numerous Dirac crossings near the Fermi level which, in the absence of spin-orbit coupling, appear to form a cubic nodal state. Spin-orbit coupling fragments this nodal state into smaller regions with Dirac-like character, with the fragmenting being more pronounced in thecompound.