Spin Diffusion Length in Ferromagnet/Superconductor Bilayers

被引：0

作者：

Cheng, S. L. ^{[1
,2
]}

Chuang, T. H. ^{[1
]}

Lin, J. G. ^{[2
]}

机构：

[1] Natl Taiwan Univ, Dept Mat Sci & Engn, Taipei 10617, Taiwan

[2] Natl Taiwan Univ, Ctr Condensed Matter Sci, Taipei 10617, Taiwan

来源：

IEEE TRANSACTIONS ON MAGNETICS | 2017年 / 53卷 / 11期

关键词：

Exchange energy; polarized quasi-particle; spin diffusion length; COHERENT TRANSPORT; ANDREEV REFLECTION; FERROMAGNET;

D O I：

10.1109/TMAG.2017.2712194

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We report a systematic study on the bilayers of ferromagnetic Sm1-xSrxMnO3 (SSMO) and superconducting YBa2Cu3O7 (YBCO). The bilayer structure is composed of one SSMO layer of 10-nm thickness and one layer of YBCO of various thicknesses. The measurements of X-ray diffraction/reflectivity, resistivity, and magnetization were carried out for determining the crystalline properties and the superconducting temperatures of bilayers. A significant suppression of superconducting temperature is observed in all bilayers, indicating that the spin-polarized quasi-particles of SSMO are efficiently injected into the YBCO layer. The experimental results will be discussed in term of the spin diffusion length of polarized quasi-particles with a model of inverse proximity.

引用

页数：4

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