Tungsten-hydrogen complexes on graphene on Ir(111)

Tungsten-hydrogen complexes on graphene on Ir(111)

W and W-H complexes on graphene on Ir(111) were studied by means of low temperature scanning tunneling microscopy. H is found to coadsorb at the sample surface during W evaporation. Five different W-related structures on graphene on Ir(111) were found and characterized. They are identified as WHn, w...

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Veröffentlicht in:New journal of physics 2014-09, Vol.16 (9), p.93047-13
Hauptverfasser: Altenburg, S J, Berndt, R
Format: Artikel
Sprache:eng
Schlagworte:
adatom
Charging
Dehydrogenation
Electric fields
Evaporation
Graphene
hydrogen
Low temperature
Physics
Scanning tunneling microscopy
Spectroscopy
STM
Switching
Tungsten
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Berndt, R
description W and W-H complexes on graphene on Ir(111) were studied by means of low temperature scanning tunneling microscopy. H is found to coadsorb at the sample surface during W evaporation. Five different W-related structures on graphene on Ir(111) were found and characterized. They are identified as WHn, with , as shown by electric field induced dehydrogenation. They exhibit a number of peculiar effects, such as electric field induced shifts of spectroscopic features as well as reversible switching and charging effects. In addition, two different structures of H on Ir(111) were characterized.
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subjects adatom
Charging
Dehydrogenation
Electric fields
Evaporation
Graphene
hydrogen
Low temperature
Physics
Scanning tunneling microscopy
Spectroscopy
STM
Switching
Tungsten
title Tungsten-hydrogen complexes on graphene on Ir(111)
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