Atomically resolved spin-dependent tunneling on the oxygen-terminated Fe3O4(111) -: art. no. 057201

被引：48
|
作者：
Berdunov, N [1 ]
Murphy, S [1 ]
Mariotto, G [1 ]
Shvets, IV [1 ]
机构：
[1] Univ Dublin Trinity Coll, Dept Phys, SFI Nanosci Lab, Dublin 2, Ireland
来源：
PHYSICAL REVIEW LETTERS | 2004年 / 93卷 / 05期
基金：
爱尔兰科学基金会;
关键词：
D O I：
10.1103/PhysRevLett.93.057201
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We employ spin-polarized STM to study the spin-dependent tunneling between a magnetite (111) sample and an antiferromagnetic tip through a vacuum barrier at room temperature. Atomic scale STM images show significant magnetic contrast corresponding to variations in the local surface states induced by oxygen vacancies. The estimated variations in tunneling magnetoresistance of 250% suggest that the spin-transport properties are significantly altered locally by the presence of surface defects.
引用
收藏
页码：057201 / 1
页数：4
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