Spin injection into multilayer graphene from highly spin-polarized Co2FeSi Heusler alloy

被引：16

作者：

Yamaguchi, Takehiro ^{[1
]}

Moriya, Rai ^{[1
]}

Oki, Soichiro ^{[2
]}

Yamada, Shinya ^{[2
]}

Masubuchi, Satoru ^{[1
]}

Hamaya, Kohei ^{[2
]}

Machida, Tomoki ^{[1
,3
]}

机构：

[1] Univ Tokyo, Inst Ind Sci, Meguro Ku, Tokyo 1538505, Japan

[2] Osaka Univ, Grad Sch Engn Sci, Toyonaka, Osaka 5608531, Japan

[3] Univ Tokyo, Inst Nano Quantum Informat Elect, Meguro Ku, Tokyo 1538505, Japan

来源：

APPLIED PHYSICS EXPRESS | 2016年 / 9卷 / 06期

基金：

日本科学技术振兴机构; 日本学术振兴会;

关键词：

ROOM-TEMPERATURE; BORON-NITRIDE; HETEROSTRUCTURES; ELECTRONICS;

D O I：

10.7567/APEX.9.063006

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We demonstrate electrical spin injection into multilayer graphene (MLG) in a lateral spin valve device from a highly spin-polarized Co2FeSi (CFS) Huesler electrode. Exfoliated MLG was transferred onto prepatterned epitaxial CFS wires grown on an Si(111) substrate by a polymer-based transfer method. This method enabled us to fabricate multiple single-crystal CFS electrodes in contact with MLG. Electrical spin injection from CFS to MLG was detected through nonlocal magnetoresistance (MR) measurement. A nonlocal spin signal of 430 Omega was observed; this is the largest value among all reported nonlocal MR values in graphene-based devices. (C) 2016 The Japan Society of Applied Physics

引用

页数：3

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