Temperature dependent induced spin polarization in Cr2O3 overlayers on epitaxial CrO2 films

被引：19

作者：

Cheng, RH

Komesu, T

Jeong, HK

Yuan, L

Liou, SH

Doudin, B

Dowben, PA ^{[1
]}

Losovyj, YB

机构：

[1] Univ Nebraska, Behlen Lab Phys, Dept Phys & Astron, Lincoln, NE 68588 USA

[2] Univ Nebraska, Behlen Lab Phys, Ctr Mat Res & Anal, Lincoln, NE 68588 USA

[3] Louisiana State Univ, Ctr Adv Microstruct & Devices, Baton Rouge, LA 70806 USA

来源：

PHYSICS LETTERS A | 2002年 / 302卷 / 04期

基金：

美国国家科学基金会;

关键词：

chromium oxide; magnetism;

D O I：

10.1016/S0375-9601(02)01050-2

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Spin-resolved inverse photoemission investigations show that the native Cr2O3 surface is antiferromagnetically coupled to the CrO2 thin film substrate, with a temperature dependent induced polarization. The Cr2O3 exhibits the characteristic behavior of a rigid band/spin mixing behavior (non-Stoner) of a local moment paramagnet. The strong shifts of the conduction band edge from room temperature to low temperature suggests that the extent of the induced polarization of the Cr2O3 oxide surface, by the CrO2 substrate, may be partly related to Coulomb blockade effects identified in CrO2/Cr2O3/CrO2 junctions. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：211 / 216

页数：6

共 57 条

[1] MAGNETIC PROBING DEPTH IN SPIN-POLARIZED SECONDARY-ELECTRON SPECTROSCOPY [J].