Metallic LaTiO3/SrTiO3 superlattice films on the SrTiO3 (100) surface

被引：40
|
作者：
Shibuya, K
Ohnishi, T
Kawasaki, M
Koinuma, H
Lippmaa, M
机构：
[1] Univ Tokyo, Inst Solid State Phys, Chiba 2778581, Japan
[2] Tohoku Univ, Inst Mat Res, Aoba Ku, Sendai, Miyagi 9808577, Japan
[3] Tokyo Inst Technol, Mat & Struct Lab, Midori Ku, Yokohama, Kanagawa 2268503, Japan
来源：
JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS | 2004年 / 43卷 / 9A-B期
关键词：
LaTiO3; SrTiO3; superlattice; conducting oxides; titanate; epitaxial electrodes;
D O I：
10.1143/JJAP.43.L1178
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Metallic epitaxial LaTiO3/SrTiO3 superlattice films were fabricated on SrTiO3 (100) substrates. The superlattice structure maintained compressive epitaxial strain on LaTiO3 and stabilized the perovskite LaTiO3 crystal phase, which is not thermodynamically stable in thick films on SrTiO3. The superlattice films had very smooth surfaces and grew coherently on the substrates. The lowest resistivity was obtained in a (LaTiO3)(2)/(SrTiO3)(3) superlattice film, reaching 200 muOmega(.)cm at 300 K. These superlattice films can be applied as epitaxial electrodes in n-type SrTiO3 epitaxial hetero-devices such as field-effect transistors.
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页码：L1178 / L1180
页数：3
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