Weak ferroelectric charge transfer in layer-asymmetric bilayers of 2D semiconductors.

Weak ferroelectric charge transfer in layer-asymmetric bilayers of 2D semiconductors.
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DOI:
10.1038/s41598-021-92710-1
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发表时间:
2021-06-28
期刊:
影响因子:
4.6
通讯作者:
Magorrian SJ
Magorrian SJ
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Ferreira F;Enaldiev VV;Fal'ko VI;Magorrian SJ

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In bilayers of two-dimensional semiconductors with stacking arrangements which lack inversion symmetry charge transfer between the layers due to layer-asymmetric interband hybridisation can generate a potential difference between the layers. We analyse bilayers of transition metal dichalcogenides (TMDs)—in particular, —for which we find a substantial stacking-dependent charge transfer, and InSe, for which the charge transfer is found to be negligibly small. The information obtained about TMDs is then used to map potentials generated by the interlayer charge transfer across the moiré superlattice in twistronic bilayers.
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