Observation of domain morphology in twisted antimonene layers via moiré superlattice contrast with low energy electron microscopy

IF 2 3区 工程技术 Q2 MICROSCOPY
Mariusz Gołębiowski , Piotr Dróżdż , Ryszard Zdyb
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引用次数: 0

Abstract

Using low energy electron microscopy we investigate the origin of the contrast between domains in a heterostructure composed of twisted two-dimensional antimonene layers. The contrast is observed in the bright-field microscopy mode under normal incidence of the electron beam. The heterostructure consists of a single-domain β phase grown on a top of two-domain α phase antimonene on a W(110) surface. We show that the observed contrast is due to the formation of two different moiré superlattices and it directly reflects the two-domain structure of α antimonene. We also demonstrate that the contrast depends on the relative symmetry and crystallography of two moiré patterns.
用低能电子显微镜观察扭曲锑烯层的畴形态
利用低能电子显微镜,我们研究了由扭曲的二维反二烯层组成的异质结构中畴间对比的起源。在电子束正常入射下,在亮场显微镜模式下观察到这种对比。该异质结构由生长在W(110)表面的两畴α相锑烯上的单畴β相组成。我们发现这种对比是由于形成了两种不同的摩尔超晶格,它直接反映了α锑烯的双畴结构。我们还证明了对比取决于两种莫尔条纹的相对对称性和晶体学。
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来源期刊
Ultramicroscopy
Ultramicroscopy 工程技术-显微镜技术
CiteScore
4.60
自引率
13.60%
发文量
117
审稿时长
5.3 months
期刊介绍: Ultramicroscopy is an established journal that provides a forum for the publication of original research papers, invited reviews and rapid communications. The scope of Ultramicroscopy is to describe advances in instrumentation, methods and theory related to all modes of microscopical imaging, diffraction and spectroscopy in the life and physical sciences.
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