The structural and electronic properties of platinum–germanide on Ge(111)

Saedi, Amirmehdi; Poelsema, Bene; Zandvliet, Henricus J.W.

doi:10.1016/j.susc.2010.12.007

Cited by 3 publications

(2 citation statements)

References 30 publications

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“…Interestingly, for the other low-index surfaces of germanium an eutectic top-layer is formed, rather than droplets. [67][68][69][70]. This difference is due to the relatively high surface free energy of Ge(1 1 0) as compared to the Ge(0 0 1) and Ge(1 1 1) surfaces [71,72].…”

Section: Synthesis Of Germanenementioning

confidence: 99%

Germanene: the germanium analogue of graphene

Acun

Zhang

Bampoulis

et al. 2015

J. Phys.: Condens. Matter

382

294

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Recently, several research groups have reported the growth of germanene, a new member of the graphene family. Germanene is in many aspects very similar to graphene, but in contrast to the planar graphene lattice, the germanene honeycomb lattice is buckled and composed of two vertically displaced sub-lattices. Density functional theory calculations have revealed that free-standing germanene is a 2D Dirac fermion system, i.e. the electrons behave as massless relativistic particles that are described by the Dirac equation, which is the relativistic variant of the Schrödinger equation. Germanene is a very appealing 2D material. The spin-orbit gap in germanene (~24 meV) is much larger than in graphene (<0.05 meV), which makes germanene the ideal candidate to exhibit the quantum spin Hall effect at experimentally accessible temperatures. Additionally, the germanene lattice offers the possibility to open a band gap via for instance an externally applied electrical field, adsorption of foreign atoms or coupling with a substrate. This opening of the band gap paves the way to the realization of germanene based field-effect devices. In this topical review we will (1) address the various methods to synthesize germanene (2) provide a brief overview of the key results that have been obtained by density functional theory calculations and (3) discuss the potential of germanene for future applications as well for fundamentally oriented studies.

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Section: Synthesis Of Germanenementioning

confidence: 99%

Germanene: the germanium analogue of graphene

Acun

Zhang

Bampoulis

et al. 2015

J. Phys.: Condens. Matter

382

294

View full text Add to dashboard Cite

show abstract

“…Although in previous studies focus has been on the reactions of germanium with Pd [6,[14][15][16][17][18][19][20][21][22][23], Pt [6,13,22,[24][25][26][27][28][29], and Ni [6,9,11,[13][14][15][16]22,[28][29][30][31][32][33][34][35][36][37][38], so far there is very little literature on reactions of germanium with Ir [39]. Gaudet et al [6] carried out a systematic study of thermally induced reaction of 20 transition metals with Ge substrates.…”

Section: Introductionmentioning

confidence: 99%

Effect of thermal treatment on the characteristics of iridium Schottky barrier diodes on n-Ge (100)

Chawanda

Coelho

Auret

et al. 2012

Journal of Alloys and Compounds

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Iridium (Ir) Schottky barrier diodes were deposited on bulk grown (100) Sbdoped n-type germanium by using the electron beam deposition system. Electrical characterization of these contacts using current-voltage (I-V) and capacitance-voltage (C-V) measurements was performed under various annealing conditions. The variation of the electrical properties of these Schottky diodes can be attributed to combined effects of interfacial reaction and phase transformation during the annealing process.Thermal stability of the Ir/n-Ge (100) was observed up to annealing temperature of 500 o C. Furthermore, structural characterization of these samples was performed by using a scanning electron microscopy (SEM) at different annealing temperatures.Results have also revealed that the onset temperature for agglomeration in a 20 nm Ir/n-Ge (100) system occurs between 600-700 o C.

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Ion beam analysis of the interaction between platinum and germanium

Habanyama

2013

Nuclear Instruments and Methods in Physics Research Section B:

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The structural and electronic properties of platinum–germanide on Ge(111)

Cited by 3 publications

References 30 publications

Germanene: the germanium analogue of graphene

Germanene: the germanium analogue of graphene

Effect of thermal treatment on the characteristics of iridium Schottky barrier diodes on n-Ge (100)

Ion beam analysis of the interaction between platinum and germanium

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