Electric pulse induced resistance change effect in manganites due to polaron localization at the metal-oxide interfacial region

被引：50

作者：

Jooss, Ch. ^{[1
]}

Hoffmann, J. ^{[1
]}

Fladerer, J. ^{[1
]}

Ehrhardt, M. ^{[1
]}

Beetz, T. ^{[2
]}

Wu, L. ^{[2
]}

Zhu, Y. ^{[2
]}

机构：

[1] Univ Gottingen, Inst Mat Phys, D-37077 Gottingen, Germany

[2] Brookhaven Natl Lab, Dept Condensed Matter Phys & Mat Sci, Upton, NY 11973 USA

来源：

PHYSICAL REVIEW B | 2008年 / 77卷 / 13期

关键词：

D O I：

10.1103/PhysRevB.77.132409

中图分类号：

T [工业技术];

学科分类号：

08 [工学];

摘要：

Combining pulse-probe measurements as well as local transport measurements in an electron microscope system by a simultaneous monitoring of the structural changes, we show that the nonvolatile electric pulse induced resistance change in Ca-doped praseodymium manganite is related to a polaron order-disorder transition, modified by electronic band bending in the vicinity of an interface to a metallic electrode. A pronounced resistance change requires a critical distance between the two electrode and/or oxide interfaces to form an insulating incommensurate polaron-ordered phase during the initialization of the device. Based on these observations, a qualitative model for the electronic structure of the metal-oxide interface is developed.

引用

页数：4

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