The insulator state of ultrathin films of ferromagnetic manganites

被引：8
|
作者：
Müller, KH
Dörr, K
Walter, T
Sahana, M
Brand, K
Schultz, L
机构：
[1] IFW Dresden, D-01171 Dresden, Germany
[2] Tech Univ Dresden, Inst Appl Phys, D-01062 Dresden, Germany
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2002年 / 242卷
关键词：
metal insulator phase transitions; magnetic oxides; thin films-thickness; interface effects;
D O I：
10.1016/S0304-8853(01)01337-3
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We have investigated transport, magnetization and structure of La0.7Ca0.3MnO3 (LCMO) and La0.7Sr0.3MnO3 (LSMO) Ultrathin films with thicknesses down to 1.6 nm. The insulator state appears below 3.5 and 2.3 nm for LCMO and LSMO, respectively. It originates from interface behavior and reduced dimensionality rather than from effects of epitaxial strain. Insulating LSMO films show bias-induced conductance. (C) 2002 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：447 / 449
页数：3
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