Observation of charge ordering by Raman scattering in Nd0.5Ca0.5MnO3 thin films

被引：2

作者：

Charpentier, S. ^{[1
]}

Gill-Comeau, M. ^{[1
]}

Jandl, S. ^{[1
]}

Fournier, P. ^{[1
]}

机构：

[1] Univ Sherbrooke, Dept Phys, Regroupement Quebecois Mat Pointe, Sherbrooke, PQ J1K 2R1, Canada

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 2006年 / 18卷 / 31期

关键词：

D O I：

10.1088/0953-8984/18/31/014

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We report on the first observation by Raman scattering of charge ordering in thin films of Nd0.5Ca0.5MnO3. We observe the emergence of additional phonon excitations at low temperature that confirms the structural transition accompanying the charge ordering. The properties of our defect-free Nd0.5Ca0.5MnO3 thin films are very similar to those of the single crystals. This behaviour appears to be different from previous Raman reports on Pr0.5Ca0.5MnO3 and La0.5Ca0.5MnO3 thin films. We speculate that the different growth conditions, in particular our higher substrate temperature, are responsible for such a difference.

引用

页码：7193 / 7202

页数：10

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