Intrinsic inhomogeneities in manganite thin films investigated with scanning tunneling spectroscopy

被引：138

作者：

Becker, T ^{[1
]}

Streng, C ^{[1
]}

Luo, Y ^{[1
]}

Moshnyaga, V ^{[1
]}

Damaschke, B ^{[1
]}

Shannon, N ^{[1
]}

Samwer, K ^{[1
]}

机构：

[1] Univ Gottingen, Inst Phys 1, D-37073 Gottingen, Germany

来源：

PHYSICAL REVIEW LETTERS | 2002年 / 89卷 / 23期

关键词：

D O I：

10.1103/PhysRevLett.89.237203

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Thin films of La0.7Sr0.3MnO3 on MgO show a metal insulator transition and colossal magnetoresistance. The shape of this transition can be explained by intrinsic spatial inhomogeneities, which give rise to a domain structure of conducting and insulating domains at the submicrometer scale. These domains then undergo a percolation transition. The tunneling conductance and tunneling gap measured by scanning tunneling spectroscopy were used to distinguish and visualize these domains.

引用

页码：237203/1 / 237203/4

页数：4

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