Scanning tunneling potentiometry search for mesoscopic phase separation in La0.7Sr0.3MnO3

被引：8

作者：

Grévin, B ^{[1
]}

Maggio-Aprile, I ^{[1
]}

Bentzen, A ^{[1
]}

Kuffer, O ^{[1
]}

Joumard, I ^{[1
]}

Fischer, O ^{[1
]}

机构：

[1] Univ Geneva, DPMC, CH-1211 Geneva 4, Switzerland

来源：

APPLIED PHYSICS LETTERS | 2002年 / 80卷 / 21期

关键词：

D O I：

10.1063/1.1481787

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Optimally doped epitaxial La0.7Sr0.3MnO3/SrTiO3 thin films have been probed by scanning tunneling potentiometry in a search for possible mesoscopic phase separation. The experiments were performed in ultrahigh vacuum after an in situ deposition, which prevents local inhomogeneities from forming due to surface contamination. Resulting reproducible two-dimensional images reveal clear topographic features and continuous potentiometric variations. These results support the idea that mesoscopic phase separation is not a generic feature shared by all optimally doped manganites. (C) 2002 American Institute of Physics.

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页码：3979 / 3981

页数：3

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