76 citations · 284 across the 10 of their papers we have counts for
10 papers
Structure and dynamics investigations of a partially hydrogenated graphene/Ni(111) surface
Emanuel Bahn, Anton Tamtögl, John Ellis +2
Using helium-3 atom scattering, we have studied the adsorption kinetics, the structure and the diffusional dynamics of atomic hydrogen on the surface of a graphene monolayer on Ni(…
Inter-adsorbate forces and coherent scattering in helium spin-echo experiments
David J. Ward, Arjun Raghavan, Anton Tamtögl +5
In studies of dynamical systems, helium atoms scatter coherently from an ensemble of adsorbates as they diffuse on the surface. The results give information on the co-operative beh…
Motion of water monomers reveals a kinetic barrier to ice nucleation on graphene
Anton Tamtögl, Emanuel Bahn, Marco Sacchi +7
The interfacial behaviour of water remains a central question to fields as diverse as protein folding, friction and ice formation[1,2]. While the structural and dynamical propertie…
Nanoscale Surface Dynamics of BiTe(111): Observation of a Prominent Surface Acoustic Wave and the Role of van der Waals Interactions
Anton Tamtögl, Davide Campi, Martin Bremholm +8
We present a combined experimental and theoretical study of the surface vibrational modes of the topological insulator BiTe. Using high-resolution helium-3 spin-echo spectr…
A Helium-Surface Interaction Potential of BiTe(111) from Ultrahigh-Resolution Spin-Echo Measurements
Anton Tamtögl, Michael Pusterhofer, Martin Bremholm +7
We have determined an atom-surface interaction potential for the HeBiTe(111) system by analysing ultrahigh resolution measurements of selective adsorption resonances. Th…
Polarisation in Spin-Echo Experiments: Multi-point and Lock-in Measurements
Anton Tamtögl, Benjamin Davey, David J. Ward +3
Spin-echo instruments are typically used to measure diffusive processes and the dynamics and motion in samples on ps and ns timescales. A key aspect of the spin-echo technique is t…
Electron-Phonon Coupling and Surface Debye Temperature of BiTe(111) from Helium Atom Scattering
Anton Tamtögl, Patrick Kraus, Nadav Avidor +9
We have studied the topological insulator BiTe(111) by means of helium atom scattering. The average electron-phonon coupling of BiTe(111) is determined by adapt…
How Atomic Steps Modify Diffusion and Inter-adsorbate Forces: Empirical Evidence From Hopping Dynamics in Na/Cu(115)
O. Godsi, G. Corem, T. Kravchuk +7
We followed the collective atomic-scale motion of Na atoms on a vicinal Cu(115) surface within a time scale of pico to nano-seconds using helium spin echo spectroscopy. The well de…
Energy Dissipation during Diffusion at Metal Surfaces: Disentangling the Role of Phonons vs. Electron-Hole Pairs
Simon P. Rittmeyer, David J. Ward, Patrick Gütlein +3
Helium spin echo experiments combined with ab initio-based Langevin molecular dynamics simulations are used to quantify the adsorbate-substrate coupling during the thermal diffusio…
Quantum effects in the diffusion of hydrogen on Ru(0001)
Eliza M. McIntosh, K. Thor Wikfeldt, John Ellis +2
An understanding of hydrogen diffusion on metal surfaces is important, not just for its role in heterogeneous catalysis and hydrogen fuel cell technology, but also because it provi…