E
Erik Wahlström
Researcher at Norwegian University of Science and Technology
Publications - 55
Citations - 2333
Erik Wahlström is an academic researcher from Norwegian University of Science and Technology. The author has contributed to research in topics: Scanning tunneling microscope & Ferromagnetic resonance. The author has an hindex of 20, co-authored 55 publications receiving 2149 citations. Previous affiliations of Erik Wahlström include Chalmers University of Technology & Aarhus University.
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Journal ArticleDOI
Oxygen vacancies on TiO2(110) and their interaction with H2O and O2: A combined high-resolution STM and DFT study
Stefan Wendt,Renald Schaub,J. Matthiesen,Ebbe K. Vestergaard,Erik Wahlström,Maria Rasmussen,P. Thostrup,Luis M. Molina,Erik Lægsgaard,Ivan Stensgaard,Bjørk Hammer,Flemming Besenbacher +11 more
TL;DR: From an interplay between high-resolution scanning tunneling microscopy (STM) and density functional theory (DFT), the authors in this paper discuss the origin of various point defects on reduced rutile TiO2(1/1/0)-(1 × 1) surfaces.
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Oxygen-mediated diffusion of oxygen vacancies on the TiO2(110) surface.
Renald Schaub,Erik Wahlström,Anders Rønnau,Erik Lægsgaard,Ivan Stensgaard,Flemming Besenbacher +5 more
TL;DR: Time-resolved, high-resolution scanning tunneling microscopy unraveled an adsorbate-mediated diffusion mechanism of oxygen vacancies on rutile TiO2(110), leading to an anisotropic oxygen vacancy diffusion pathway perpendicular to the bridging oxygen rows.
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Bonding of gold nanoclusters to oxygen vacancies on rutile TiO2(110).
Erik Wahlström,Núria López,Renald Schaub,P. Thostrup,Anders Rønnau,C. Africh,Erik Lægsgaard,Jens K. Nørskov,Flemming Besenbacher +8 more
TL;DR: It is shown both experimentally and theoretically that a single oxygen vacancy can bind 3 Au atoms on average, and a new growth model for the TiO2(110) system involving vacancy-cluster complex diffusion is presented.
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Electron transfer-induced dynamics of oxygen molecules on the TiO2(110) surface.
Erik Wahlström,Ebbe K. Vestergaard,Renald Schaub,Anders Rønnau,Majken Vestergaard,Erik Lægsgaard,Ivan Stensgaard,Flemming Besenbacher +7 more
TL;DR: Evidence is provided for a charge transfer–induced diffusion mechanism for O2 molecules adsorbed on a rutile TiO2(110) surface and the O2 hopping rate depended on the number of surface donors (oxygen vacancies), which determines the density of conduction band electrons.
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Preparation and characterization of electrochemically etched W tips for STM
TL;DR: In this article, the authors investigated methods for cleaning dc-etched polycrystalline tungsten tips for scanning tunnelling microscopy (STM), including Ar-ion sputtering, heating, chemical treatments and Ne-ion self-sputtering.