Temperature-dependent and polarization-tuned resistive switching in Au/BiFeO3/SrRuO3 junctions

Temperature-dependent and polarization-tuned resistive switching in Au/BiFeO3/SrRuO3 junctions
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Au/BiFeO3/SrRuO3 结中的温度相关和极化调谐电阻开关

DOI:
10.1063/1.4870813
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发表时间:
2014-04
影响因子:
4
通讯作者:
Liu, J. -M.
Liu, J. -M.
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Yan, Z. B.;Lu, X. B.;Lu, Z. X.;Zeng, M.;Chen, Y.;Gao, X. S.;Wan, J. G.;Dai, J. Y.;Liu, J. -M.

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研究了Au/BiFeO 3/SrRuO 3结构在不同温度下的双极阻变与极化反转之间的关系。结果表明,随着温度的降低,Au/BiFeO 3和BiFeO 3/SrRuO 3结中极化引起的势垒变化减小。这解释了为什么电阻开关比随温度降低而降低,并给出证据表明,极化调制的电阻状态的Au/BiFeO 3/SrRuO 3结构。此外,当温度高于323 K时,氧空位迁移和载流子俘获/脱陷机制对该结构的阻变行为也起着重要作用.
The relationship between the bipolar resistive switching and the polarization reversal is investigated at various temperatures in the Au/BiFeO3/SrRuO3 structure. It is found that the polarization-induced barrier variation in the Au/BiFeO3 and BiFeO3/SrRuO3 junctions decreases with decreasing temperature. This explains why the resistance-switching ratio decreases with decreasing temperature below 323 K and gives evidence that the polarization modulates the resistance state of the Au/BiFeO3/SrRuO3 structure. Besides, the oxygen vacancies migration and/or the carrier trapping/detrapping mechanisms are also suggested to play a very important role in the resistive switching behavior in this structure as the temperature goes above 323 K.
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