Author:
Kumar Avanish,Procaccia Itamar,Singh Murari
Abstract
Abstract
A careful examination of the Quasi-Localized Modes (QLMs) that exist in a generic atomistic model of a glass former reveals at least two types of them, each exhibiting a different density of states, one depending on the frequency as
and the other as
. The properties of the glassy energy landscape that is responsible for the two types of modes is examined here, explaining the analytic feature responsible for the creations of (at least) two families of QLMs. It is argued that the QLMs that are revealed by diagonalizing the Hessian matrix are not related to possibly existing Two-Level Systems (TLS).
Funder
Minerva Foundation
US-Israel Binational Science Foundation
Subject
General Physics and Astronomy
Cited by
6 articles.
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