Electronic structure of the superconducting layered ternary nitrides CaTaN2 and CaNbN2

被引：12

作者：

Oliva, JM

Weht, R

Ordejón, P

Canadell, E

机构：

[1] CSIC, Inst Ciencia Mat Barcelona, Bellaterra 08193, Spain

[2] CNEA, Dept Fis, RA-1650 San Martin, Argentina

来源：

PHYSICAL REVIEW B | 2000年 / 62卷 / 03期

关键词：

D O I：

10.1103/PhysRevB.62.1512

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The electronic structure of the layered ternary nitrides CaMN2 (M = Ta, Nb) has been studied and the results are compared with those for the related LiMoN2 phase. It is shown that the former are two-dimensional metals, with a Fermi surface very similar to that of the 1T-TaX2 (X = S, Se) dichalcogenides, whereas the latter is a three-dimensional metal. The three phases show strong covalent bonding within the layers but ionic bonding with the alkali atom sheets.

引用

页码：1512 / 1515

页数：4

共 29 条

[1]

[Anonymous], 1966, ADV INORG CHEM

[2] The high temperature preparation and property measurements of CaTaN2: A ternary superconducting nitride [J].