Proposal of a one-dimensional electron gas in the steps at the LaAlO3-SrTiO3 interface.
Proposal of a one-dimensional electron gas in the steps at the LaAlO3-SrTiO3 interface.
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DOI：
10.1103/physrevlett.108.166802
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发表时间：
2011-11
影响因子：
8.6
通讯作者：
N. Bristowe;Thomas Fix;M. Blamire;P. B. Littlewood;E. Artacho
中科院分区：
文献类型：
--
作者：
N. Bristowe;Thomas Fix;M. Blamire;P. B. Littlewood;E. Artacho
在LaAlO（3）和SrTiO（3）之间的界面处的二维电子气已经成为最近最吸引人的和高度争论的氧化物系统之一。在这里，我们提出了一个一维的电子气可以工程的LaAlO（3）/SrTiO（3）界面的台阶边缘。这些预测支持的第一性原理计算和静电建模，阐明了起源的一维电子气作为电子重建，以补偿净表面电荷的步骤边缘。结果表明，一种新的路线，以增加这些电子接口的功能密度。
The two-dimensional electron gas at the interface between LaAlO(3) and SrTiO(3) has become one of the most fascinating and highly debated oxide systems of recent times. Here we propose that a one-dimensional electron gas can be engineered at the step edges of the LaAlO(3)/SrTiO(3) interface. These predictions are supported by first-principles calculations and electrostatic modeling which elucidate the origin of the one-dimensional electron gas as an electronic reconstruction to compensate a net surface charge in the step edge. The results suggest a novel route to increasing the functional density in these electronic interfaces.