Giant magnetoresistance enhancement at room-temperature in organic spin valves based on La0.67Sr0.33MnO3 electrodes

被引：29

作者：

Chen, B. B. ^{[1
]}

Zhou, Y.

Wang, S.

Shi, Y. J.

Ding, H. F.

Wu, D.

机构：

[1] Nanjing Univ, Natl Lab Solid State Microstruct, Nanjing 210093, Jiangsu, Peoples R China

来源：

APPLIED PHYSICS LETTERS | 2013年 / 103卷 / 07期

关键词：

SEMICONDUCTORS; TRANSITION; INTERFACE; DEVICES; FILMS;

D O I：

10.1063/1.4818614

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We have systematically studied the magnetoresistance (MR) of Alq(3)-based organic spin valves using as-grown La0.67Sr0.33MnO3 (LSMO), annealed LSMO, and La0.67Ca0.33MnO3 as the bottom electrode. A giant enhancement of MR ratio (more than one order of magnitude) is observed when the optimal annealed LSMO is used, and the measured MR can be as high as 2.2% at room temperature. Below similar to 100 K, the temperature dependence of the normalized MR is almost identical with these three electrodes despite the strong difference in Curie temperature (from 250 K to 360 K). We attribute this similar MR temperature dependence to the spin relaxation in Alq(3). (C) 2013 AIP Publishing LLC.

引用

页数：4

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