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.
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页数：4
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