Effect of film thickness manganite-based on interfacial barrier of heterojunctions

Interracial barrier is a key factor that determines the performances of heterojunctions. In this work, we study the effect of manganite film thickness on the effective interracial barrier for La0.67Sr0.33MnO3/Nb：SrTiO3 junctions, The barrier is extracted from the forward current-voltage characterist...

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Bibliographic Details
Published in:Chinese physics B 2010 (11), p.18-22
Main Author: 谢燕武 郭得峰 孙继荣 沈保根
Format: Article
Language:English
Subjects:
光伏效应
屏障作用
异质结
电流电压特性
界面势垒
薄膜厚度
锰氧化物薄膜
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Summary:Interracial barrier is a key factor that determines the performances of heterojunctions. In this work, we study the effect of manganite film thickness on the effective interracial barrier for La0.67Sr0.33MnO3/Nb：SrTiO3 junctions, The barrier is extracted from the forward current-voltage characteristics. Our results demonstrate that the barrier decreases gradually from -0.85 eV to -0.60 eV when the film thickness decreases from 150 nm to 2 nm. The overall value of the barrier is only about 50% of the corresponding one determined from the photovoltaic effect.
ISSN:1674-1056
2058-3834