72 citations · 448 across the 16 of their papers we have counts for
17 papers
Polarization characteristics of adatoms self-diffusing on metal surfaces under high electric fields
Ekaterina Baibuz, Andreas Kyritsakis, Ville Jansson +1
Although atomic diffusion on metal surfaces under high electric fields has been studied theoretically and experimentally since the 1970s, its accurate and quantitative theoretical…
Growth mechanism for nanotips in high electric fields
Ville Jansson, Ekaterina Baibuz, Andreas Kyritsakis +5
In this work we show using atomistic simulations that the biased diffusion in high electric field gradients creates a mechanism whereby nanotips may start growing from small surfac…
Tungsten migration energy barriers for surface diffusion: a parameterization for KMC simulations
Ville Jansson, Andreas Kyritsakis, Simon Vigonski +4
We have calculated the migration barriers for surface diffusion on Tungsten. Our results form a self-sufficient parameterization for Kinetic Monte Carlo simulations of arbitrarily…
The Compact Linear ee Collider (CLIC): Physics Potential
P. Roloff, R. Franceschini, U. Schnoor +1
The Compact Linear Collider, CLIC, is a proposed ee collider at the TeV scale whose physics potential ranges from high-precision measurements to extensive direct sensitivit…
Atomistic behavior of metal surfaces under high electric fields
Andreas Kyritsakis, Ekaterina Baibuz, Ville Jansson +1
Combining classical electrodynamics and density functional theory (DFT) calculations, we develop a general and rigorous theoretical framework that describes the energetics of metal…
Data sets and trained neural networks for Cu migration barriers
Jyri Kimari, Ville Jansson, Simon Vigonski +4
Kinetic Monte Carlo (KMC) is an efficient method for studying diffusion. A limiting factor to the accuracy of KMC is the number of different migration events allowed in the simulat…
Adatom diffusion in high electric fields
Ville Jansson, Ekaterina Baibuz, Andreas Kyritsakis +1
Strong electric fields are known to create biased adatom migration on metallic surfaces. We present a Kinetic Monte Carlo model that can simulate adatom migration on a tungsten (W)…
Au nanowire junction breakup through surface atom diffusion
Simon Vigonski, Ville Jansson, Sergei Vlassov +6
Metallic nanowires are known to break into shorter fragments due to the Rayleigh instability mechanism. This process is strongly accelerated at elevated temperatures and can comple…
Simulations of surface stress effects in nanoscale single crystals
Vahur Zadin, Mihkel Veske, Simon Vigonski +5
Onset of vacuum arcing near a metal surface is often associated with nanoscale asperities, which may dynamically appear due to different processes ongoing in the surface and subsur…
Cu self-sputtering MD simulations for 0.1-5 keV ions at elevated temperatures
Tarvo Metspalu, Ville Jansson, Vahur Zadin +4
Self-sputtering of copper under high electric fields is considered to contribute to plasma buildup during a vacuum breakdown event frequently observed near metal surfaces, even in…
Migration barriers for surface diffusion on a rigid lattice: challenges and solutions
Ekaterina Baibuz, Simon Vigonski, Jyri Lahtinen +4
Atomistic rigid lattice Kinetic Monte Carlo is an efficient method for simulating nano-objects and surfaces at timescales much longer than those accessible by molecular dynamics. A…
Updated baseline for a staged Compact Linear Collider
The CLIC, CLICdp collaborations, : +515
The Compact Linear Collider (CLIC) is a multi-TeV high-luminosity linear e+e- collider under development. For an optimal exploitation of its physics potential, CLIC is foreseen to…
Long-term stability of Cu surface nanotips
Ville Jansson, Ekaterina Baibuz, Flyura Djurabekova
Sharp nanoscale tips on metal surfaces of electrodes enhance locally applied electric fields. Strongly enhanced electric fields trigger electron field emission and atom evaporation…
OKMC simulations of Fe-C systems under irradiation: sensitivity studies
Ville Jansson, Lorenzo Malerba
This paper continues our previous work on a nanostructural evolution model for Fe-C alloys under irradiation, using Object Kinetic Monte Carlo modeling techniques. We here present…
Sink strength calculations of dislocations and loops using OKMC
Ville Jansson, Lorenzo Malerba, Andrée De Backer +2
We calculate the sink strength of dislocations and toroidal absorbers using Object Kinetic Monte Carlo and compare with the theoretical expressions. We get good agreement for dislo…
The nanostructure evolution in Fe-C systems under irradiation at 560 K
Ville Jansson, Monica Chiapetto, Lorenzo Malerba
This work extends our Object Kinetic Monte Carlo model for neutron irradiation-induced nanostructure evolution in Fe-C alloys to consider higher irradiation temperatures. The previ…
Simulation of the nanostructure evolution under irradiation in Fe-C alloys
Ville Jansson, Lorenzo Malerba
Neutron irradiation induces in steels nanostructural changes, which are at the origin of the mechanical degradation that these materials experience during operation in nuclear powe…