TY - JOUR

T1 - Metallic and Insulating Interfaces of Amorphous SrTiO3-Based Oxide Heterostructures

A1 - Chen,Yunzhong

A1 - Pryds,Nini

A1 - Kleibeuker,Josée E.

A1 - Koster,Gertjan

A1 - Sun,Jirong

A1 - Stamate,Eugen

A1 - Shen,Baogen

A1 - Rijnders,Guus

A1 - Linderoth,Søren

AU - Chen,Yunzhong

AU - Pryds,Nini

AU - Kleibeuker,Josée E.

AU - Koster,Gertjan

AU - Sun,Jirong

AU - Stamate,Eugen

AU - Shen,Baogen

AU - Rijnders,Guus

AU - Linderoth,Søren

PB - American Chemical Society

PY - 2011

Y1 - 2011

N2 - 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.

AB - 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.

KW - Solid Oxide Fuel Cells

U2 - 10.1021/nl201821j

DO - 10.1021/nl201821j

JO - Nano Letters

JF - Nano Letters

SN - 1530-6984

IS - 9

VL - 11

SP - 3774

EP - 3778

ER -