Computer simulation and experimental observation of stripe phases in La1-xCaxMnO3

被引：0
|
作者：
Cox, S [1 ]
Loudon, JC [1 ]
Midgley, PA [1 ]
Mathur, ND [1 ]
机构：
[1] Univ Cambridge, Dept Mat Sci & Met, Cambridge CB2 3QZ, England
来源：
ELECTRON MICROSCOPY AND ANALYSIS 2003 | 2004年 / 179期
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D O I：
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中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
In this paper we combine low temperature electron microscopy of polycrystalline La1-xCaxMnO3 (0.55less than or equal toxless than or equal to0.71) with computer simulations of a model system using bi-stripe type sub-units. The results indicate that the observed modulations cannot be described as a random mixture of bi-stripe type sub-units delineated by discommensurations. The modulation is also simulated using the Frenkel-Kontorova model suggesting that electron distribution may vary smoothly (akin to a charge density wave).
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页码：53 / 56
页数：4
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