Colossal resistive relaxation effects in a Pr0.67Ca0.33MnO3 single crystal

被引：96
|
作者：
Anane, A
Renard, JP
Reversat, L
Dupas, C
Veillet, P
Viret, M
Pinsard, L
Revcolevschi, A
机构：
[1] Inst Elect Fondamentale, F-91405 Orsay, France
[2] CEA Saclay, Serv Phys Etat Condense, F-91191 Gif Sur Yvette, France
[3] Univ Paris 11, Chim Solide Lab, F-91405 Orsay, France
来源：
PHYSICAL REVIEW B | 1999年 / 59卷 / 01期
关键词：
D O I：
10.1103/PhysRevB.59.77
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We report here on an experimental study of slow thermal relaxation effects from the metastable metallic-ferromagnetic phase to the insulating one in a charge-ordered manganese oxide, Pr0.6Ca0.33MnO3. The metal-insulator transition is evidenced by an abrupt jump of the resistivity by several orders of magnitude at a well-defined time tau while there is no apparent singularity in the magnetization relaxation. This supports the view of a percolative behavior of current transport. The magnetic relaxation is discussed in terms of a two-level phenomenological model with a distribution of energy barriers. [S0163-1829(99)00202-7].
引用
收藏
页码：77 / 80
页数：4
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