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Electronic structure of the Si(1 1 1):GaSe van der Waals-like surface termination

Rudolph, Reiner ; Pettenkofer, Christian ; Bostwick, Aaron A. ; Adams, Jonathan A. ; Ohuchi, Fumio ; Olmstead, Marjorie A. ; Jaeckel, Bengt ; Klein, Andreas ; Jaegermann, Wolfram (2021):
Electronic structure of the Si(1 1 1):GaSe van der Waals-like surface termination. (Publisher's Version)
In: New Journal of Physics, 7, IOP Publishing, e-ISSN 1367-2630,
DOI: 10.26083/tuprints-00019805,
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Item Type: Article
Status: Publisher's Version
Title: Electronic structure of the Si(1 1 1):GaSe van der Waals-like surface termination
Language: English
Abstract:

The electronic structure of the Si(1 1 1):GaSe van der Waals-like surface termination has been determined by angle-resolved photoelectron spectro- scopy using photons in the energy range hν = 12–170 eV supplied by the BESSY and ALS synchrotron light sources. The Si(1 1 1):GaSe surface is isoelectronic to the passivated Si(1 1 1):H and Si(1 1 1):As surfaces, and also reflects the principal building block of layered chalcogenide GaSe single crystals. The electronic structure is discussed in relation to these systems. The chemical bond between the Si and Ga surface atoms is non-polar and therefore similar to the Ga–Ga bond in GaSe single crystals and also to the Si–Si bond in bulk silicon. This explains both the absence of a surface core-level shift in Si 2p photoelectron spectra of the terminated surface and the striking similarity between its observed band structure and that of bulk GaSe.

Journal or Publication Title: New Journal of Physics
Journal volume: 7
Publisher: IOP Publishing
Collation: 20 Seiten
Classification DDC: 600 Technik, Medizin, angewandte Wissenschaften > 600 Technik
600 Technik, Medizin, angewandte Wissenschaften > 620 Ingenieurwissenschaften
Divisions: 11 Department of Materials and Earth Sciences > Material Science > Surface Science
Date Deposited: 02 Nov 2021 12:21
Last Modified: 02 Nov 2021 12:21
DOI: 10.26083/tuprints-00019805
Corresponding Links:
URN: urn:nbn:de:tuda-tuprints-198058
URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/19805
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