Please use this identifier to cite or link to this item: http://hdl.handle.net/10995/101999
Title: Bandgap opening in hydrogenated germanene
Authors: Yao, Q.
Zhang, L.
Kabanov, N. S.
Rudenko, A. N.
Arjmand, T.
Rahimpour, Soleimani, H.
Klavsyuk, A. L.
Zandvliet, H. J. W.
Issue Date: 2018
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).
Keywords: ATOMS
ENERGY GAP
GERMANIUM COMPOUNDS
HONEYCOMB STRUCTURES
HYDROGEN
PLATINUM COMPOUNDS
SCANNING TUNNELING MICROSCOPY
BANDGAP OPENINGS
GERMANENE
HONEYCOMB LATTICES
HYDROGEN ATOMS
HYDROGEN EXPOSURE
SCANNING TUNNELING MICROSCOPY AND SPECTROSCOPY
SUB-LATTICES
TUNNELING SPECTRA
HYDROGENATION
URI: http://hdl.handle.net/10995/101999
Access: info:eu-repo/semantics/openAccess
SCOPUS ID: 85046109784
PURE ID: 7146280
d13eac9d-5993-4d29-9feb-5bbebff07fa7
ISSN: 36951
DOI: 10.1063/1.5026745
Appears in Collections:Научные публикации, проиндексированные в SCOPUS и WoS CC

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