Magnetic pinning of flux lines in heterostructures of cuprates and manganites

被引：50

作者：

Albrecht, J

Soltan, S

Habermeier, HU

机构：

[1] Max Planck Inst Festkorperforsch, D-70569 Stuttgart, Germany

[2] Max Planck Inst Met Res, D-70569 Stuttgart, Germany

来源：

PHYSICAL REVIEW B | 2005年 / 72卷 / 09期

关键词：

D O I：

10.1103/PhysRevB.72.092502

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The magnetic properties of heterostructures of high-temperature superconducting YBa2Cu3O7-delta and highly spin polarized, ferromagnetic La2/3Ca1/3MnO3 that are electronically decoupled by a thin SrTiO3 layer are investigated by means of SQUID magnetometry. Below the transition temperature of the superconducting component the detected signal is a measure for the critical current in the superconductor. The obtained magnetic hysteresis loops at low temperatures exhibit a substantial asymmetry with respect to H=0. This can be understood in terms of pinning of flux lines in the superconducting film due to magnetic interaction with the ferromagnetic manganite layer.

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页数：4

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