Super-resolution lightwave tomography of electronic bands in quantum materials

doi:10.1126/science.abe2112

GSTDTAP > 气候变化

DOI	10.1126/science.abe2112
	Super-resolution lightwave tomography of electronic bands in quantum materials
	M. Borsch; C. P. Schmid; L. Weigl; S. Schlauderer; N. Hofmann; C. Lange; J. T. Steiner; S. W. Koch; R. Huber; M. Kira
	2020-12-04
发表期刊	Science
出版年	2020
英文摘要	Unraveling the functionalities of quantum materials such as spin-valley-electronic, topological, and many-body effects provides a route to exploiting these materials for applications. Borsch et al. introduce a spectroscopic technique based on the concept of crystal-momentum combs. By extending the ideas of frequency combs of metrology and superresolution imaging, they demonstrate the ability to directly map out the properties of quantum electronic structures under ambient conditions. Using this technique combined with accurate many-body computations, they were able to reveal tomographic images of two-dimensional quantum materials. Science , this issue p. [1204][1] Searching for quantum functionalities requires access to the electronic structure, constituting the foundation of exquisite spin-valley–electronic, topological, and many-body effects. All-optical band-structure reconstruction could directly connect electronic structure with the coveted quantum phenomena if strong lightwaves transported localized electrons within preselected bands. Here, we demonstrate that harmonic sideband (HSB) generation in monolayer tungsten diselenide creates distinct electronic interference combs in momentum space. Locating these momentum combs in spectroscopy enables super-resolution tomography of key band-structure details in situ. We experimentally tuned the optical-driver frequency by a full octave and show that the predicted super-resolution manifests in a critical intensity and frequency dependence of HSBs. Our concept offers a practical, all-optical, fully three-dimensional tomography of electronic structure even in microscopically small quantum materials, band by band. [1]: /lookup/doi/10.1126/science.abe2112
领域	气候变化 ; 资源环境
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引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/305837
专题	气候变化资源环境科学
推荐引用方式 GB/T 7714	M. Borsch,C. P. Schmid,L. Weigl,et al. Super-resolution lightwave tomography of electronic bands in quantum materials[J]. Science,2020.
APA	M. Borsch.,C. P. Schmid.,L. Weigl.,S. Schlauderer.,N. Hofmann.,...&M. Kira.(2020).Super-resolution lightwave tomography of electronic bands in quantum materials.Science.
MLA	M. Borsch,et al."Super-resolution lightwave tomography of electronic bands in quantum materials".Science (2020).