1. A van der Waals interface that creates in-plane polarization and a spontaneous photovoltaic effect
- Author
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Mao Yoshii, Dongyang Yang, Kenji Watanabe, Joseph Laurienzo, Yoshihiro Iwasa, Masaru Onga, Yu Dong, Junwei Huang, Takashi Taniguchi, Takahiro Morimoto, Sota Kitamura, Ziliang Ye, Hongtao Yuan, Yuji Nakagawa, Ling Zhou, Takatoshi Akamatsu, and Toshiya Ideue
- Subjects
Photocurrent ,Multidisciplinary ,Materials science ,Condensed matter physics ,Stacking ,02 engineering and technology ,Photovoltaic effect ,021001 nanoscience & nanotechnology ,Polarization (waves) ,01 natural sciences ,Symmetry (physics) ,symbols.namesake ,Lattice constant ,0103 physical sciences ,Perpendicular ,symbols ,van der Waals force ,010306 general physics ,0210 nano-technology - Abstract
Engineering interface polarization Many properties can emerge at the interface of van der Waals materials created by rotating the layers of a single material or by creating heterointerfaces between different materials. Akamatsu et al. formed an interface that intentionally broke in-plane inversion symmetry by combining crystals of tungsten diselenide with threefold rotational symmetry and black phosphorus with twofold rotational symmetry. This interface creates in-plane electronic polarization that results in a spontaneous photovoltaic effect only along the polarization direction. This effect was explained in terms of a shift current mechanism. Science , this issue p. 68
- Published
- 2021
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