Semiconducting chalcogenide multilayers: structure and superconductivity

被引：3

作者：

Fogel, NY

Erenburg, AI

Pokhila, A

Bomze, Y

Sipatov, AY

Langer, V

机构：

[1] B Verkin Inst Low Temp Phys & Engn, UA-310164 Kharkov, Ukraine

[2] Chalmers Univ Technol, Dept Appl Phys, S-41296 Gothenburg, Sweden

[3] Chalmers Univ Technol, Dept Environm & Inorgan Chem, S-41296 Gothenburg, Sweden

来源：

PHYSICA B | 2000年 / 284卷

关键词：

multilayers; TEM; x-ray diffraction; XRD;

D O I：

10.1016/S0921-4526(99)02470-9

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Superconducting properties study, X-ray diffractometry and TEM investigations of the structure have been carried out on rather exotic superconducting multilayers consisting only of semiconducting materials (chalcogenides of Pb, Sn and rare-earth elements). Superconductivity is discovered in a new combination of semiconductors PbSe/EuS. It is shown that essential features of the multilayers structure determining the appearance of superconductivity are the perfect single crystallinity of entire sample and regular grids of misfit dislocations on the interfaces between two semiconductors. The segregation of free Pb observed in some cases does not correlate with appearance of superconductivity. The possibility of dislocation-induced superconductivity is discussed. (C) 2000 Published by Elsevier Science B.V. All rights reserved.

引用

页码：1123 / 1124

页数：2