Pressure-induced re-entrant electronic and magnetic state in Pr0.7Ca0.3MnO3 manganite

被引：23
|
作者：
Cui, C [1 ]
Tyson, TA [1 ]
机构：
[1] New Jersey Inst Technol, Dept Phys, Newark, NJ 07102 USA
来源：
APPLIED PHYSICS LETTERS | 2003年 / 83卷 / 14期
关键词：
D O I：
10.1063/1.1614843
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
In Pr0.7Ca0.3MnO3, pressure induces re-entrant magnetic and electronic state changes in the range from 1 atm to similar to6 GPa. The metal-insulator and magnetic transition temperatures coincide from similar to1 to 5 GPa, decouple outside of this range, and do not change monotonically with pressure. The effects may be explained by pressure-tuned competition between double exchange and super exchange. The insulating state induced by pressure above similar to5 GPa is possibly ferromagnetic, different from the ferromagnetic and antiferromagnetic phase-separated insulating state below similar to0.8 GPa. (C) 2003 American Institute of Physics.
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页码：2856 / 2858
页数：3
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