Dispersing artifacts in FT-STS: a comparison of set point effects across acquisition modes
Dispersing artifacts in FT-STS: a comparison of set point effects across acquisition modes
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FT-STS 中的伪影分散：不同采集模式下设定点效应的比较
DOI：
10.1088/0957-4484/27/41/414004
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发表时间：
2016
期刊：
影响因子：
3.5
通讯作者：
S. Burke
中科院分区：
文献类型：
--
作者：
A. J. Macdonald;Y;S. Grothe;S. Chi;P. Dosanjh;S. Johnston;S. Burke
傅里叶变换扫描隧道光谱（FT-STS），或称准粒子干涉，已成为凝聚态物理中研究一系列重要材料的重要工具。然而，复杂材料中的FT-STS通常具有挑战性，在许多情况下需要大量的理论输入，因此理解测量的潜在伪像至关重要。在这里，我们比较了获取FT-STS数据的最常见模式，并通过实验和模拟表明，在整个测量过程中，取决于尖端高度如何稳定，可能会出现伪像特征。在恒流反馈的同时获得一系列不同能量的dI/dV图时，效果最为显著；这里出现了在其他测量模式中没有观察到的分散在能量中的特征。这样的人工特征与样品中真实物理过程产生的特征相似，并且容易被误解。
Fourier-transform scanning tunnelling spectroscopy (FT-STS), or quasiparticle interference, has become an influential tool for the study of a wide range of important materials in condensed matter physics. However, FT-STS in complex materials is often challenging to interpret, requiring significant theoretical input in many cases, making it crucial to understand potential artifacts of the measurement. Here, we compare the most common modes of acquiring FT-STS data and show through both experiment and simulations that artifact features can arise that depend on how the tip height is stabilized throughout the course of the measurement. The most dramatic effect occurs when a series of dI/dV maps at different energies are acquired with simultaneous constant current feedback; here a feature that disperses in energy appears that is not observed in other measurement modes. Such artifact features are similar to those arising from real physical processes in the sample and are susceptible to misinterpretation.
准粒子干涉图揭示石墨烯覆盖的 Au(111) 的 Rashba 分裂
影响因子：
3.7
作者：
P. Leicht;J. Tesch;S. Bouvron;F. Blumenschein;P. Erler;L. Gragnaniello;M. Fonin
通讯作者：
M. Fonin
准粒子干涉图中带间散射的 Rashba 型自旋分裂
影响因子：
3.7
作者：
M. Steinbrecher;H. Harutyunyan;C. R. Ast;D. Wegner
通讯作者：
D. Wegner