4 papers
Thermal origin of quasi-localised excitations in glasses
Wencheng Ji, Tom W. J. de Geus, Marko Popović +2
Key aspects of glasses are controlled by the presence of excitations in which a group of particles can rearrange. Surprisingly, recent observations indicate that their density is d…
How collective asperity detachments nucleate slip at frictional interfaces
Tom W. J. de Geus, Marko Popović, Wencheng Ji +2
Sliding at a quasi-statically loaded frictional interface can occur via macroscopic slip events, which nucleate locally before propagating as rupture fronts very similar to fractur…
Fast generation of ultrastable computer glasses by minimization of an augmented potential energy
Geert Kapteijns, Wencheng Ji, Carolina Brito +2
We present a model and protocol that enable the generation of extremely stable computer glasses at minimal computational cost. The protocol consists of an instantaneous quench in a…
Theory for the density of interacting quasi-localised modes in amorphous solids
Wencheng Ji, Marko Popović, Tom W. J. de Geus +2
Quasi-localised modes appear in the vibrational spectrum of amorphous solids at low-frequency. Though never formalised, these modes are believed to have a close relationship with o…