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Solitons and exact velocity quantization of incommensurate sliders
Nicola Manini, Marco Cesaratto, Giuseppe E. Santoro +2
We analyze in some detail the recently discovered velocity quantization phenomena in the classical motion of an idealized one-dimensional solid lubricant, consisting of a harmonic…
Hysteresis from dynamically pinned sliding states
Andrea Vanossi, Giuseppe E. Santoro, Nicola Manini +2
We report a surprising hysteretic behavior in the dynamics of a simple one-dimensional nonlinear model inspired by the tribological problem of two sliding surfaces with a thin soli…
Kink plateau dynamics in finite-size lubricant chains
Marco Cesaratto, Nicola Manini, Andrea Vanossi +2
We extend the study of velocity quantization phenomena recently found in the classical motion of an idealized 1D model solid lubricant -- consisting of a harmonic chain interposed…
Asymmetric frictional sliding between incommensurate surfaces
Giuseppe E. Santoro, Andrea Vanossi, Nicola Manini +2
We study the frictional sliding of two ideally incommensurate surfaces with a third incommensurate sheet - a sort of extended lubricant - in between. When the mutual ratios of the…
Exactly quantized dynamics of classical incommensurate sliders
Andrea Vanossi, Nicola Manini, Giorgio Divitini +2
We report peculiar velocity quantization phenomena in the classical motion of an idealized 1D solid lubricant, consisting of a harmonic chain interposed between two periodic slider…
Theoretical aspects of highly correlated fullerides: metal-insulator transition
Nicola Manini, Erio Tosatti
We review some theoretical aspects connected with the interplay of strong electron correlations and vibron phenomena in negative fullerene ions and in solid fulleride conductors, s…
Physics and Nanofriction of Alkali Halide Solid Surfaces at the Melting Point
T. Zykova-Timan, D. Ceresoli, U. Tartaglino +1
Alkali halide (100) surfaces are anomalously poorly wetted by their own melt at the triple point. We carried out simulations for NaCl(100) within a simple (BMHFT) model potential.…
Electron-Stimulated Emission of Na Atoms from NaCl Nanocube Corners
D. Ceresoli, T. Zykova-Timan, E. Tosatti
We performed first principles density functional calculations and simulations of magic-size neutral NaCl nanocubes, and computed the the extraction of a Na neutral corner atom afte…
Ballistic Conductance and Magnetism in Short Tip-Suspended Ni Nanowires
A. Smogunov, A. Dal Corso, E. Tosatti
Electronic and transport properties of a short Ni nanowire suspended between two semi-infinite ferromagnetic Ni leads are explored in the framework of density-functional theory. Th…