Note: An ion source for alkali metal implantation beneath graphene and hexagonal boron nitride monolayers on transition metals

The construction of an alkali-metal ion source is presented. It allows the acceleration of rubidium ions to an energy that enables the penetration through monolayers of graphene and hexagonal boron nitride. Rb atoms are sublimated from an alkali-metal dispenser. The ionization is obtained by surface...

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Veröffentlicht in:Review of scientific instruments 2013-12, Vol.84 (12), p.126104-126104
Hauptverfasser: de Lima, L H, Cun, H Y, Hemmi, A, Kälin, T, Greber, T
Format: Artikel
Sprache:eng
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Zusammenfassung:The construction of an alkali-metal ion source is presented. It allows the acceleration of rubidium ions to an energy that enables the penetration through monolayers of graphene and hexagonal boron nitride. Rb atoms are sublimated from an alkali-metal dispenser. The ionization is obtained by surface ionization and desorption from a hot high work function surface. The ion current is easily controlled by the temperature of ionizer. Scanning Tunneling Microscopy measurements confirm ion implantation.
ISSN:0034-6748
1089-7623
DOI:10.1063/1.4848936