气候变化领域集成服务门户(CCPortal): Single-atom vibrational spectroscopy in the scanning transmission electron microscope

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DOI	10.1126/science.aaz5312
	Single-atom vibrational spectroscopy in the scanning transmission electron microscope
	Hage F.S.; Radtke G.; Kepaptsoglou D.M.; Lazzeri M.; Ramasse Q.M.
发表日期	2020
ISSN	0036-8075
起始页码	1124
结束页码	1127
卷号	367 期号:6482
英文摘要	Single-atom impurities and other atomic-scale defects can notably alter the local vibrational responses of solids and, ultimately, their macroscopic properties. Using high-resolution electron energy-loss spectroscopy in the electron microscope, we show that a single substitutional silicon impurity in graphene induces a characteristic, localized modification of the vibrational response. Extensive ab initio calculations reveal that the measured spectroscopic signature arises from defect-induced pseudolocalized phonon modes-that is, resonant states resulting from the hybridization of the defect modes and the bulk continuum-with energies that can be directly matched to the experiments. This finding realizes the promise of vibrational spectroscopy in the electron microscope with single-atom sensitivity and has broad implications across the fields of physics, chemistry, and materials science. © 2020 American Association for the Advancement of Science. All rights reserved.
关键词	graphene silicon defect hybridization resonance silicon transmission electron microscopy vibration Article chemical analysis chemical labeling chemical modification chemical structure electrical parameters electron beam energy dispersive X ray spectroscopy hybridization phonon polarization priority journal Raman spectrometry sensitivity analysis simulation thermometry transmission electron microscopy trend study vibrational spectroscopy
语种	英语
来源机构	Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/133666
推荐引用方式 GB/T 7714	Hage F.S.,Radtke G.,Kepaptsoglou D.M.,et al. Single-atom vibrational spectroscopy in the scanning transmission electron microscope[J]. Science,2020,367(6482).
APA	Hage F.S.,Radtke G.,Kepaptsoglou D.M.,Lazzeri M.,&Ramasse Q.M..(2020).Single-atom vibrational spectroscopy in the scanning transmission electron microscope.,367(6482).
MLA	Hage F.S.,et al."Single-atom vibrational spectroscopy in the scanning transmission electron microscope".367.6482(2020).