Properties of manganites: Band and percolation approaches

被引：26

作者：

Gor'kov, LP ^{[1
]}

Kresin, VZ

机构：

[1] Florida State Univ, Natl High Magnet Field Lab, Tallahassee, FL 32306 USA

[2] LD Landau Theoret Phys Inst, Chernogolovka 142432, Russia

[3] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA

来源：

JOURNAL OF SUPERCONDUCTIVITY | 1999年 / 12卷 / 01期

关键词：

D O I：

10.1023/A:1007756022087

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Properties of the parent compound, LaMnO3 are greatly affected by strong Hund's coupling. The result of this coupling is antiferromagnetic ordering (with a low Neel temperature) along one of the cubic axes and, as a consequence, a picture of disconnected ferromagnetic layers. Furthermore, the cooperative Jahn-Teller effect turns the compound into a band insulator. At small doping (La1-xCaxMnO3, x<<1) the band insulator state coexists with the presence of localized holes. An insulator-ferromagnetic metal transition occurs at the percolation point x(c) = 0.16.

引用

页码：243 / 246

页数：4

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