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arXiv 1005.3872cond-mat.mtrl-scicond-mat.str-el
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LaAlO3/SrTiO3表面的电荷写入

Charge writing at the LaAlO3/SrTiO3 surface

Yanwu Xie, Christopher Bell, Takeaki Yajima, Yasuyuki Hikita, Harold Y. Hwang

摘要:

偏置导电针尖原子力显微镜(AFM)已被证明可以写入和擦除纳米级的金属线在LaAlO 3/SrTiO 3界面。使用不同的AFM模式,我们表明电导率切换的机制是表面电荷的写入。这些电荷稳定地沉积在宽范围的LaAlO 3厚度上,包括块状晶体。一个很强的不对称性与写入极性被发现为1和2单位电池的LaAlO 3,理论预测的内置电位提供了实验证据。

英文摘要:

Biased conducting-tip atomic force microscopy (AFM) has been shown to write and erase nanoscale metallic lines at the LaAlO3/SrTiO3 interface. Using various AFM modes, we show the mechanism of conductivity switching is the writing of surface charge. These charges are stably deposited on a wide range of LaAlO3 thicknesses, including bulk crystals. A strong asymmetry with writing polarity was found for 1 and 2 unit cells of LaAlO3, providing experimental evidence for a theoretically predicted built-in potential.

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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