Universal Density of Low-Frequency States in Amorphous Solids at Finite Temperatures

Prasenjit Das, Itamar Procaccia

Research output: Contribution to journalArticlepeer-review

Abstract

It has been established that the low frequency quasilocalized modes of amorphous solids at zero temperature exhibit universal density of states, depending on the frequencies as D(omega) similar to omega(4). It remains an open question whether this universal law extends to finite temperatures. In this Letter we show that well quenched model glasses at temperatures as high as T-g/3 possess the same universal density of states. The only condition required is that average particle positions stabilize before thermal diffusion destroys the cage structure of the material. The universal density of quasilocalized low frequency modes refers then to vibrations around the thermally averaged configuration of the material.

Original languageEnglish
Article number085502
Number of pages5
JournalPhysical review letters
Volume126
Issue number8
DOIs
StatePublished - 26 Feb 2021

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy

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