Fast spectroscopic mapping of two-dimensional quantum materials
Fast spectroscopic mapping of two-dimensional quantum materials
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DOI：
10.1103/physrevresearch.3.l042025
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发表时间：
2021-11-10
影响因子：
4.2
通讯作者：
Natterer, Fabian D.
中科院分区：
文献类型：
--
作者：
Zengin, Berk;Oppliger, Jens;Natterer, Fabian D.
量子材料的发现需要针对众多自由度（如磁场、位置、温度或掺杂等）进行广泛的光谱研究。由于传统上这涉及两个或更多个连续的测量任务，光谱映射可能会变得极其缓慢。我们通过稀疏采样和平行光谱学的结合展示了快几个数量级的测量。我们以金（111）和铋锶钙铜氧（Bi₂Sr₂CaCu₂O₈₊δ，Bi2212）这两个著名的模型体系的准粒子干涉成像为例来说明我们的概念。我们的方法是可行的，利用现有装置易于实施，并且可以很容易地扩展以促进门控光谱或场光谱研究。鉴于进一步显著的速度优势，它为从根本上推动量子材料的发现奠定了基础。
The discovery of quantum materials entails extensive spectroscopic studies that are carried out against multitudes of degrees of freedom, such as magnetic field, location, temperature, or doping. As this traditionally involves two or more serial measurement tasks, spectroscopic mapping can become excruciatingly slow. We demonstrate orders of magnitude faster measurements through our combination of sparse sampling and parallel spectroscopy. We exemplify our concept using quasiparticle interference imaging of Au(111) and Bi2Sr2CaCu2O8+delta (Bi2212), as two well-known model systems. Our method is accessible, straightforward to implement with existing setups, and can be easily extended to promote gate or field spectroscopy. In view of further substantial speed advantages, it is setting the stage to fundamentally promote the discovery of quantum materials.