Metallic and Insulating Interfaces of Amorphous SrTiO3-Based Oxide Heterostructures

被引：300

作者：

Chen, Yunzhong ^{[1
]}

Pryds, Nini ^{[1
]}

Kleibeuker, Josee E. ^{[2
,3
]}

Koster, Gertjan ^{[2
,3
]}

Sun, Jirong ^{[4
,5
]}

Stamate, Eugen ^{[6
]}

Shen, Baogen ^{[4
,5
]}

Rijnders, Guus ^{[2
,3
]}

Linderoth, Soren ^{[1
]}

机构：

[1] Tech Univ Denmark, Riso Natl Lab Sustainable Energy, Fuel Cells & Solid State Chem Div, DK-4000 Roskilde, Denmark

[2] Univ Twente, Fac Sci & Technol, NL-7500 AE Enschede, Netherlands

[3] Univ Twente, MESA, Inst Nanotechnol, NL-7500 AE Enschede, Netherlands

[4] Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China

[5] Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China

[6] Tech Univ Denmark, Riso Natl Lab Sustainable Energy, Plasma Phys & Technol Programme, DK-4000 Roskilde, Denmark

来源：

NANO LETTERS | 2011年 / 11卷 / 09期

基金：

中国国家自然科学基金;

关键词：

Complex oxide films; oxide electronics; heterointerfaces; strontium titanate; PULSED-LASER DEPOSITION; ELECTRON-GAS;

D O I：

10.1021/nl201821j

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The conductance confined at the interface of complex oxide heterostructures provides new opportunities to explore nanoelectronic as well as nanoionic devices. Herein we show that metallic interfaces can be realized in SrTiO3-based heterostructures with various insulating overlayers of amorphous LaAlO3, SrTiO3, and yttria-stabilized zirconia films. On the other hand, samples of amorphous La7/8Sr1/8MnO3 films on SrTiO3 substrates remain insulating. The interfacial conductivity results from the formation of oxygen vacancies near the interface, suggesting that the redox reactions on the surface of SrTiO3 substrates play an important role.

引用

页码：3774 / 3778

页数：5

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