6 papers
Phononic frictional losses of a particle crossing a crystal: linear-response theory
Gabriele Riva, Giacomo Piscia, Nicolas Trojani +3
We address weak-coupling frictional sliding with phononic dissipation by means of analytic many-body techniques. Our model consists of a particle (the "slider") moving through a tw…
The electronic structure of a doped Mott-Hubbard surface
Mattia Iannetti, Silvio Modesti, Giovanni Di Santo +8
The Sn/Si(111)-({\sqrt}3{\times}{\sqrt}3)R30° surface, a 2D Mott insulator, has long been predicted and then found experimetally to metallize and even turn superconducting upon bo…
Superlubric-Locked Transition of Twist Grain Boundaries in 3D Crystals
Jin Wang, Erio Tosatti
Properties of twist grain boundaries (TGB), long known structurally but not tribologically, are simulated under sliding and load, with Au(111) our test case. The load-free TGB moir…
Striped twisted state in the orientational epitaxy on quasicrystals
Nicola Manini, Mario Forzanini, Sebastiano Pagano +9
The optimal "twisted" geometry of a crystalline layer on a crystal is long known, but that on a quasicrystal is still unknown and open. We predict analytically that the layer equil…
Can Neural Networks Learn Nanoscale Friction?
Mahboubeh Shabani, Andrea Silva, Franco Pellegrini +6
Current nanofriction experiments on crystals, both tip-on-surface and surface-on-surface, provide force traces as their sole output, typically exhibiting atomic size stick-slip osc…
Universal Moiré Buckling of Freestanding 2D Bilayers
Jin Wang, Erio Tosatti
The physics of membranes, a classic subject, acquires new momentum from two-dimensional (2D) materials multilayers. This work reports the surprising results emerged during a theore…