M
Michael Hohage
Researcher at Johannes Kepler University of Linz
Publications - 72
Citations - 1906
Michael Hohage is an academic researcher from Johannes Kepler University of Linz. The author has contributed to research in topics: Reflectance difference spectroscopy & Monolayer. The author has an hindex of 22, co-authored 72 publications receiving 1788 citations. Previous affiliations of Michael Hohage include London Centre for Nanotechnology & Forschungszentrum Jülich.
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Inversion of growth speed anisotropy in two dimensions.
TL;DR: An inversion of the triangular shapes of the two-dimensional islands observed in a narrow temperature range by scanning tunneling microscopy during growth of Pt on Pt(111) is reported.
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New approach for determination of diffusion parameters of adatoms.
TL;DR: A new approach for the determination of activation energy and attempt frequency for the diffusion of single adatoms on a surface is proposed and demonstrated for Pt adatom diffusion on Pt(111) and it is found that the measurement of the mean square displacement of individual ad atoms is influenced by the STM tip.
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Exciton-dominated optical response of ultra-narrow graphene nanoribbons
Richard Denk,Michael Hohage,Peter Zeppenfeld,Jinming Cai,Carlo A. Pignedoli,Hajo Söde,Roman Fasel,Xinliang Feng,Klaus Müllen,Shudong Wang,Deborah Prezzi,Andrea Ferretti,Alice Ruini,Elisa Molinari,Pascal Ruffieux +14 more
TL;DR: Reflectance difference spectroscopy in combination with ab initio calculations show that ultranarrow graphene nanoribbons have fully anisotropic optical properties dominated by excitonic effects that sensitively depend on the exact atomic structure.
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Origin of oxygen induced layer-by-layer growth in homoepitaxy on Pt(111).
TL;DR: It is demonstrated that the presence of oxygen reduces the barrier height for the motion of PT adatoms across step edges and facilitates the interlayer mass transport and thus the layer-by-layer growth.
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Pt(111) reconstruction induced by enhanced Pt gas-phase chemical potential.
TL;DR: Large terraces of the Pt(111) surface are shown to reconstruct in the presence of a Pt gas-phase environment down to 400 K, and the main features of the reconstruction network as seen by the scanning tunneling microscope correspond to those inferred from x-ray scattering for the high-temperature (>1330 K) spontaneous Pt( 111) reconstruction.