Article Dans Une Revue Journal of Physical Chemistry Letters Année : 2017

Tip-Induced Switch of Germanene Atomic Structure

Résumé

A new germanene crystallographic structure is investigated by scanning tunnelling microscopy and density functional theory calculations. We found that germanene can crystallize in two stable but different structures when grown on Al(111) at the same temperature. These structures are evidenced in scanning tunnelling images by a honeycomb contrast and by a hexagonal contrast. These contrasts are relevant of a Ge network with one (hexagonal) or two (honeycomb) Ge atoms per unit cell shifted upward with respect to the other Ge atoms. These structures appear alternatively and can be turned on and off by a tip-induced process.

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Dates et versions

hal-04406891 , version 1 (19-01-2024)

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Regis Stephan, Mickael Derivaz, Marie-Christine Hanf, Didier Dentel, Natalia Massara, et al.. Tip-Induced Switch of Germanene Atomic Structure. Journal of Physical Chemistry Letters, 2017, 8 (18), pp.4587-4593. ⟨10.1021/acs.jpclett.7b02137⟩. ⟨hal-04406891⟩
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