Ge2Pt hut clusters: A substrate for germanene

Rik van Bremen; Pantelis Bampoulis; Johannes Aprojanz; Mark Smithers; Bene Poelsema; Christoph Tegenkamp; Harold J.W. Zandvliet

doi:10.1063/1.5046997

Ge₂Pt hut clusters: A substrate for germanene

Rik van Bremen (Corresponding Author), Pantelis Bampoulis, Johannes Aprojanz, Mark Smithers, Bene Poelsema, Christoph Tegenkamp, Harold J.W. Zandvliet

Physics of Interfaces and Nanomaterials

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Abstract

The formation and structure of Ge₂Pt clusters was studied in order to understand their germanene termination layer. The Ge₂Pt clusters are formed by depositing a few layers of Pt on a Ge(110) surface. Annealing at temperatures above 1043 K results in eutectic Ge-Pt droplets that etch grooves on the surface in the [1 1 0] direction. Upon cooling down, they solidify and decompose into a Ge₂Pt phase and a pure Ge phase. Electron diffraction reveals that the hut-shaped clusters have their (001) plane oriented parallel to the Ge(110) surface and their (100) plane facing in the Ge[1 1 0] direction. The facets of the Ge₂Pt hut clusters have been determined to be the {101} and {011} planes. The germanene layers which cover these facets are commensurate with the {101} and {011} facets of the Ge₂Pt substrate.

Original language	English
Article number	125301
Number of pages	6
Journal	Journal of Applied Physics
Volume	124
Issue number	12
DOIs	https://doi.org/10.1063/1.5046997
Publication status	Published - 28 Sept 2018

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title = "Ge2Pt hut clusters: A substrate for germanene",

abstract = "The formation and structure of Ge2Pt clusters was studied in order to understand their germanene termination layer. The Ge2Pt clusters are formed by depositing a few layers of Pt on a Ge(110) surface. Annealing at temperatures above 1043 K results in eutectic Ge-Pt droplets that etch grooves on the surface in the [1 1 0] direction. Upon cooling down, they solidify and decompose into a Ge2Pt phase and a pure Ge phase. Electron diffraction reveals that the hut-shaped clusters have their (001) plane oriented parallel to the Ge(110) surface and their (100) plane facing in the Ge[1 1 0] direction. The facets of the Ge2Pt hut clusters have been determined to be the {101} and {011} planes. The germanene layers which cover these facets are commensurate with the {101} and {011} facets of the Ge2Pt substrate.",

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AU - van Bremen, Rik

AU - Bampoulis, Pantelis

AU - Aprojanz, Johannes

AU - Smithers, Mark

AU - Poelsema, Bene

AU - Tegenkamp, Christoph

AU - Zandvliet, Harold J.W.

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AB - The formation and structure of Ge2Pt clusters was studied in order to understand their germanene termination layer. The Ge2Pt clusters are formed by depositing a few layers of Pt on a Ge(110) surface. Annealing at temperatures above 1043 K results in eutectic Ge-Pt droplets that etch grooves on the surface in the [1 1 0] direction. Upon cooling down, they solidify and decompose into a Ge2Pt phase and a pure Ge phase. Electron diffraction reveals that the hut-shaped clusters have their (001) plane oriented parallel to the Ge(110) surface and their (100) plane facing in the Ge[1 1 0] direction. The facets of the Ge2Pt hut clusters have been determined to be the {101} and {011} planes. The germanene layers which cover these facets are commensurate with the {101} and {011} facets of the Ge2Pt substrate.

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Ge₂Pt hut clusters: A substrate for germanene

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