Enhanced low-field magnetoresistance in La2/3Ca1/3MnO3/Pr2/3Ca1/3MnO3 superlattices

被引：44
作者：
Li, H
Sun, JR
Wong, HK [1 ]
机构：
[1] Chinese Univ Hong Kong, Dept Phys, Hong Kong, Hong Kong, Peoples R China
[2] Chinese Acad Sci, Inst Phys, Beijing 100080, Peoples R China
来源：
APPLIED PHYSICS LETTERS | 2002年 / 80卷 / 04期
关键词：
D O I：
10.1063/1.1445802
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We report on the observation of enhanced low-field magnetoresistance in La2/3Ca1/3MnO3/Pr2/3Ca1/3MnO3 (LCMO/PCMO) superlattices with ultrathin PCMO layers. In particular, [LCMO(100 Angstrom)/PCMO(10 Angstrom)](17) superlattice exhibits magnetoresistance MR=Deltarho/rho(0)=-55% in a magnetic field of 500 Oe and at temperature 219 K. The enhancement is associated with the ultrasharp metal-insulator transition. (C) 2002 American Institute of Physics.
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页码：628 / 630
页数：3
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