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Analysis of scanning tunneling microscopy images and scanning tunneling spectrum of electrons confined in equilateral triangular quantum corrals

机译:限制在等边三角形量子束中的电子的扫描隧道显微镜图像和扫描隧道光谱分析

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摘要

We determined the stationary states of an electron confined in an equilateral triangular quantum corral by the superposition of electron waves undergoing successive reflections at three barrier walls. By using wave functions and eigenenergies, we analyzed scanning tunneling microscopy (STM) images and scanning tunneling spectra for the quantum corral. Our results are consistent with experimental STM images observed in the differential conductance mode (dI/dV) and scanning tunneling spectra. It is pointed out that the dI/dV image is not simply proportional to the surface local density of states but is greatly dependent on a filtering function.
机译:我们通过在三个势垒壁处经历连续反射的电子波的叠加来确定局限在等边三角形量子围栏中的电子的稳态。通过使用波函数和本征能,我们分析了扫描隧道显微镜(STM)图像和扫描扫描隧道光谱的量子畜栏。我们的结果与在差分电导模式(dI / dV)和扫描隧道光谱中观察到的实验STM图像一致。要指出的是,dI / dV图像不仅与状态的表面局部密度成正比,而且在很大程度上取决于滤波功能。

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