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arXiv 1606.07974cond-mat.mtrl-scicond-mat.mes-hall
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金属-钴酸盐界面的输运机制

Transport mechanism through metal-cobaltite interfaces

C. Acha, A. Schulman, M. Boudard, K. Daoudi, T. Tsuchiya

摘要:

研究了Ag/La $_{1-x}$ Sr $_x$ CoO $_3$(LSCO)界面的阻变(RS)特性与温度的关系。LSCO是在LaAlO $_3$衬底上通过金属有机沉积生长的完全弛豫的100 nm膜。在室温下设置低电阻状态和高电阻状态,并且测量它们的电流-电压(IV)特性的温度依赖性,注意避免电阻状态的显著变化。用一个Poole-Frenkel元件和两个欧姆电阻组成的电路模型很好地再现了每个状态的非平凡IV曲线。的RS所产生的变化的微观描述,这使得设想的界面作为一个区域,导电和绝缘相混合,产生麦克斯韦-瓦格纳贡献的介电性能的图片。

英文摘要:

The resistive switching (RS) properties as a function of temperature were studied for Ag/La$_{1-x}$Sr$_x$CoO$_3$ (LSCO) interfaces. The LSCO is a fully-relaxed 100 nm film grown by metal organic deposition on a LaAlO$_3$ substrate. Both low and a high resistance states were set at room temperature and the temperature dependence of their current-voltage (IV) characteristics was mea- sured taking care to avoid a significant change of the resistance state. The obtained non-trivial IV curves of each state were well reproduced by a circuit model which includes a Poole-Frenkel element and two ohmic resistances. A microscopic description of the changes produced by the RS is given, which enables to envision a picture of the interface as an area where conductive and insulating phases are mixed, producing Maxwell-Wagner contributions to the dielectric properties.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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