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.

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页码：1512 / 1515

页数：4

相关论文

共 29 条

[21] Remnant fermi surface in the presence of an underlying instability in layered 1T-TaS2 [J].

Pillo, T ;

Hayoz, J ;

Berger, H ;

Grioni, M ;

Schlapbach, L ;

Aebi, P .

PHYSICAL REVIEW LETTERS, 1999, 83 (17) :3494-3497

[22] ELECTRONIC-STRUCTURE OF THE LAYERED NITRIDE LIMON2 [J].

SINGH, DJ .

PHYSICAL REVIEW B, 1992, 46 (15) :9332-9335

[23] BAND STRUCTURES OF THE LAYER COMPOUNDS 1T-TAS2 AND 2H-TASE2 IN THE PRESENCE OF COMMENSURATE CHARGE-DENSITY WAVES [J].

SMITH, NV ;

KEVAN, SD ;

DISALVO, FJ .

JOURNAL OF PHYSICS C-SOLID STATE PHYSICS, 1985, 18 (16) :3175-3189

[24]

WACHSMANN C, 1995, THESIS U DORTMUND

[25] ANALOGIES BETWEEN THE CONCEPTS OF MOLECULAR CHEMISTRY AND SOLID-STATE PHYSICS CONCERNING STRUCTURAL INSTABILITIES - ELECTRONIC ORIGIN OF THE STRUCTURAL MODULATIONS IN LAYERED TRANSITION-METAL DICHALCOGENIDES [J].

WHANGBO, MH ;

CANADELL, E .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1992, 114 (24) :9587-9600

[26] CHARGE-DENSITY WAVES AND SUPERLATTICES IN METALLIC LAYERED TRANSITION-METAL DICHALCOGENIDES [J].

WILSON, JA ;

DISALVO, FJ ;

MAHAJAN, S .

ADVANCES IN PHYSICS, 1975, 24 (02) :117-201

[27] AN EXAMINATION OF THE FORMATION AND CHARACTERISTICS OF CHARGE-DENSITY WAVES IN INORGANIC MATERIALS WITH SPECIAL REFERENCE TO THE TWO-DIMENSIONAL AND ONE-DIMENSIONAL TRANSITION-METAL CHALCOGENIDES [J].

WITHERS, RL ;

WILSON, JA .

JOURNAL OF PHYSICS C-SOLID STATE PHYSICS, 1986, 19 (25) :4809-4845

[28] Superconductivity at 25.5 K in electron-doped layered hafnium nitride [J].

Yamanaka, S ;

Hotehama, K ;

Kawaji, H .

NATURE, 1998, 392 (6676) :580-582

[29] A new layer-structured nitride superconductor. Lithium-intercalated beta-zirconium nitride chloride, LixZrNCl [J].

Yamanaka, S ;

Kawaji, H ;

Hotehama, K ;

Ohashi, M .

ADVANCED MATERIALS, 1996, 8 (09) :771-&