Metamagnetism in Jahn-Teller systems

被引：4
|
作者：
Nagaev, EL [1 ]
机构：
[1] Russian Acad Sci, Inst High Pressure Phys, Troitsk 142092, Moscow Region, Russia
来源：
PHYSICS LETTERS A | 1998年 / 243卷 / 1-2期
关键词：
D O I：
10.1016/S0375-9601(98)00233-3
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Metamagnetism of the antiferromagnetic Pr and Nd manganites is explained by both the dynamic and static Jahn-Teller effect. The former leads to the appearance of the biquadratic terms in the effective Hamiltonian, due to which, on increase in the magnetic field, the magnetization exhibits a jump. The latter leads to the reconstruction of the d-orbital ordering in a magnetic field with a simultaneous jump in the magnetization. In this case a field-induced lattice reconstruction occurs. (C) 1998 Published by Elsevier Science B.V.
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页码：95 / 98
页数：4
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