Selective photo-electron emission from hydrogenated graphene driven by standing wave field at Bragg condition.

Interesting electronic properties arise in vertically stacked graphene sheets, some of which can be controlled by mutual orientation of the adjacent layers. In this study, we investigate the MBE grown...

Graphene on Ir(111) was hydrogenated selectively in the HCP and FCC regions by controlling the substrate temperature during exposure. Hydrogenated carbon in these areas both form ordered clusters, but are found to contribute to different components.

Adam Roberts opened the discussion: We refer to hard and so X-ray photoelectron spectroscopy (HAXPES and SOXPES, respectively). There does not appear to be a consensus within the photoemission community as to a denition of the photon energies associated with these acronyms. Is it possible to dene the energies considered to be hard X-rays in the context of X-ray photoemission spectroscopy? Joshua S. Gibson replied: I agree that this is an ambiguous term. People have also dened "tender" X-rays, which have an energy between so and hard X-rays. Researchers have stated that silver-based lab sources are hard, compared to the Al source, so could "hard" be dened relative to the Al Ka source?Alexander Shard remarked: Regarding the denition of HAXPES, this is currently under consideration in ISO TC201 and the literature denition from ref.1 is currently used, where an X-ray energy of 2140 eV is the minimum HAXPES energy.