Transport properties across the La2/3Ca1/3MnO3/SrTiO3 heterointerface

被引：2
|
作者：
Balcells, L. L. [1 ]
Abad, L. L. [1 ]
Rojas, H. [1 ,2 ]
Del Pino, A. Perez [1 ]
Estrade, S. [3 ]
Arbiol, J. [3 ,4 ]
Peiro, F. [3 ]
Martinez, B. [1 ]
机构：
[1] CSIC, Inst Ciencia Mat Barcelona, E-08193 Barcelona, Spain
[2] Cent Univ Venezuela, Fac Ciencias, Escuela Fis, Caracas 1020A, Venezuela
[3] Univ Barcelona, EME CeRMAE IN UB, Dept Elect, E-08028 Barcelona, Spain
[4] Univ Barcelona, TEM MAT, SErv Cientificotecn, E-08028 Barcelona, Spain
来源：
JOURNAL OF APPLIED PHYSICS | 2008年 / 103卷 / 07期
关键词：
D O I：
10.1063/1.2833760
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The transport properties across La2/3Ca1/3MnO3/SrTiO3 (LCMO/STO) heterostructures with different thicknesses of the STO insulating barrier have been studied by using atomic force microscopy measurements in the current sensing (CS) mode. To avoid intrinsic problems of the CS method we have developed a nanostructured contact geometry of Au dots. The conduction process across the LCMO/STO interface exhibits the typical features of a tunneling process. The analysis of I(V) curves by using the Simmons model allows us to determine the barrier height (phi(0)approximate to 0.6 eV) of STO barriers.
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页数：3
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