Charge Localization Induced by Pentagons on Ge(110).

Dennis J Klaassen, Carolien Castenmiller, Harold J W Zandvliet, Pantelis Bampoulis

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Article in The journal of physical chemistry. C, Nanomaterials and interfaces, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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5 · Who and what money

Authors and funding

4 authors.

Dennis J KlaassenPhysics of Interfaces and Nanomaterials, MESA+ Institute, University of Twente, P.O. Box 217, 7500AE Enschede, Overijssel, The Netherlands.ORCID https://orcid.org/0000-0002-5871-7341

Carolien CastenmillerPhysics of Interfaces and Nanomaterials, MESA+ Institute, University of Twente, P.O. Box 217, 7500AE Enschede, Overijssel, The Netherlands.ORCID https://orcid.org/0000-0003-0568-1485

Harold J W ZandvlietPhysics of Interfaces and Nanomaterials, MESA+ Institute, University of Twente, P.O. Box 217, 7500AE Enschede, Overijssel, The Netherlands.ORCID https://orcid.org/0000-0001-6809-139X

Pantelis BampoulisPhysics of Interfaces and Nanomaterials, MESA+ Institute, University of Twente, P.O. Box 217, 7500AE Enschede, Overijssel, The Netherlands.ORCID https://orcid.org/0000-0002-2347-5223

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The Ge(110) surface reconstructs into ordered and disordered phases, in which the basic unit is a five-membered ring of Ge atoms (pentagon). The variety of surface reconstructions leads to a rich electronic density of states with several surface states. Using scanning tunneling microscopy and spectroscopy, we have identified the exact origins of these surface states and linked them to either the Ge pentagons or the underlying Ge-Ge bonds. We show that even moderate fluctuations in the positions of the Ge pentagonal units induce large variations in the local density of states. The local density of states modulates in a precise manner, following the geometrical constraints on tiling Ge pentagons. These geometry-correlated electronic states offer a vast configurational landscape that could provide new opportunities in data storage and computing applications.

Identifiers

PMID36660094

DOI10.1021/acs.jpcc.2c06399

PMCPMC9841572

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