Inhomogeneous transport in heteroepitaxial La0.7Ca0.3MnO3/SrTiO3 multilayers

被引：56
作者：
Jo, MH [1 ]
Mathur, ND
Evetts, JE
Blamire, MG
Bibes, M
Fontcuberta, J
机构：
[1] Univ Cambridge, Dept Mat Sci, Cambridge CB2 3QZ, England
[2] CSIC, Inst Ciencia Mat Barcelona, E-08193 Bellaterra, Catalunya, Spain
来源：
APPLIED PHYSICS LETTERS | 1999年 / 75卷 / 23期
关键词：
D O I：
10.1063/1.125430
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We have investigated the electrical transport properties of heteroepitaxial La0.7Ca0.3MnO3(LCMO)/SrTiO3 multilayers; as the LCMO layer thickness was varied from 25 to 2.5 nm, the metallic transition was suppressed and enhanced magnetoresistance extended over low temperatures. The results of transport and magnetic measurements imply a vertically inhomogeneous magnetic structure in the LCMO layers, with magnetically disordered interfaces. Although strain is clearly implicated in this surface disorder, we show that intrinsic magnetic disorder must also be associated with the interfaces. (C) 1999 American Institute of Physics. [S0003-6951(99)03349-5].
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页码：3689 / 3691
页数：3
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