Direct measurement of the spin polarization of Co2FeAl in combination with MgO tunnel barriers

被引：11
|
作者：
Schebaum, Oliver [1 ]
Ebke, Daniel [1 ]
Niemeyer, Andrea [1 ]
Reiss, Guenter [1 ]
Moodera, Jagadeesh S. [2 ]
Thomas, Andy [1 ]
机构：
[1] Univ Bielefeld, D-33615 Bielefeld, Germany
[2] MIT, Francis Bitter Magnet Lab, Cambridge, MA 02139 USA
来源：
JOURNAL OF APPLIED PHYSICS | 2010年 / 107卷 / 09期
关键词：
MAGNETORESISTANCE; TEMPERATURE; FERROMAGNET;
D O I：
10.1063/1.3358245
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
It is a truth universally acknowledged that a Heusler compound in possession of a good order must be in want of a high spin polarization. In the present work, we investigated the spin polarization of the Heusler compound Co2FeAl by spin polarized tunneling through a MgO barrier into a superconducting Al-Si electrode. The measured spin polarization of P=55% is in good agreement with the previously obtained tunnel magnetoresistance values and compared to the data by other groups. (C) 2010 American Institute of Physics. [doi: 10.1063/1.3358245]
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页数：3
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