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cond-mat.soft2019
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…
cond-mat.soft2018
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…