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|Title:||Bandgap opening in hydrogenated germanene|
Kabanov, N. S.
Rudenko, A. N.
Rahimpour, Soleimani, H.
Klavsyuk, A. L.
Zandvliet, H. J. W.
|Publisher:||American Institute of Physics Inc.|
|Citation:||Bandgap opening in hydrogenated germanene / Q. Yao, L. Zhang, N. S. Kabanov, et al. — DOI 10.1063/1.5026745 // Applied Physics Letters. — 2018. — Vol. 112. — Iss. 17. — 171607.|
|Abstract:||We have studied the hydrogenation of germanene synthesized on Ge2Pt crystals using scanning tunneling microscopy and spectroscopy. The germanene honeycomb lattice is buckled and consists of two hexagonal sub-lattices that are slightly displaced with respect to each other. The hydrogen atoms adsorb exclusively on the Ge atoms of the upward buckled hexagonal sub-lattice. At a hydrogen exposure of about 100 L, the (1 × 1) buckled honeycomb structure of germanene converts to a (2 × 2) structure. Scanning tunneling spectra recorded on this (2 × 2) structure reveal the opening of a bandgap of about 0.2 eV. A fully (half) hydrogenated germanene surface is obtained after an exposure of about 9000 L hydrogen. The hydrogenated germanene, also referred to as germanane, has a sizeable bandgap of about 0.5 eV and is slightly n-type. © 2018 Author(s).|
SCANNING TUNNELING MICROSCOPY
SCANNING TUNNELING MICROSCOPY AND SPECTROSCOPY
|Appears in Collections:||Научные публикации, проиндексированные в SCOPUS и WoS CC|
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