ANISOTROPY OF THE SUPERCONDUCTING PROPERTIES OF MISFIT LAYER COMPOUNDS (MX)N(NBX2)M

被引：14

作者：

MONCEAU, P ^{[1
]}

CHEN, J ^{[1
]}

LABORDE, O ^{[1
]}

BRIGGS, A ^{[1
]}

AURIEL, C ^{[1
]}

ROESKY, R ^{[1
]}

MEERSCHAUT, A ^{[1
]}

ROUXEL, J ^{[1
]}

机构：

[1] UNIV NANTES,IMN,CHIM SOLIDES LAB,F-44072 NANTES,FRANCE

来源：

PHYSICA B | 1994年 / 194卷

关键词：

D O I：

10.1016/0921-4526(94)91680-2

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We have synthetized new compounds of the misfit layer family of general formula (MX)n(NbX2)m with X : S, Se, M : Pb, Sn, rare earth metals, 1.1 < n < 1.2, m = 1, 2. Some of them exhibit a superconducting transition. In particular we compare the superconducting properties of polytypes as ''PbNbS3''-''PbNb2S5''-''LaNbSe3''-''LaNb2Se5''. We show that the stacking mode of the (NbX2)n is of prime importance for the occurrence of superconductivity. Anisotropy in the superconducting state has been measured by angular magnetoresistance. Superconductivity in the compound ''LaNb2Se5'' has an extreme anisotropic character that in addition with the structural incommensurability allows a direct comparison with high T(c) oxides.

引用

页码：2361 / 2362

页数：2

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