Cuprate/ferromagnetic oxide superlattices

被引：16

作者：

Habermeier, HU ^{[1
]}

Cristiani, G ^{[1
]}

机构：

[1] MPI Festkorperforsch, D-70569 Stuttgart, Germany

来源：

JOURNAL OF SUPERCONDUCTIVITY | 2002年 / 15卷 / 05期

关键词：

superlattices; manganites; high-temperature superconductors; ferromagnetism;

D O I：

10.1023/A:1021098920016

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

YBa2Cu3O7/La0.67Ca0.33MnO3 as well as YBa2Cu3O7/SrRuO3 superlattices have been grown by pulsed laser deposition with individual layer thickness ranging from 4 to 200 unit cells for the YBa2Cu3O7 and 10 to 500 unit cells for the magnetic oxides. Whereas simple heterostructures reproduce the intrinsic properties of the constituent material rather well with reduced critical temperatures for the magnetic and superconducting phase transitions, the critical temperatures systematically vary with the superlattice composition. The introduction of a SrTiO3 spacer layer between the YBCO and LCMO film, respectively, causes a shift of the critical temperatures close to the intrinsic values again. The results are discussed in view of the interaction effects at the electronic level.

引用

页码：425 / 431

页数：7

共 18 条

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