- Statistics and Properties of Low-Frequency Vibrational Modes in Structural Glasses
- Physical Review Letters
- Volume | Issue number
- 117 | 3
- Article number
- Number of pages
- Document type
- Faculty of Science (FNWI)
- Institute for Theoretical Physics Amsterdam (ITFA)
Institute of Physics (IoP)
Institute for High Energy Physics (IHEF)
Low-frequency vibrational modes play a central role in determining various basic properties of glasses, yet their statistical and mechanical properties are not fully understood. Using extensive numerical simulations of several model glasses in three dimensions, we show that in systems of linear size L sufficiently smaller than a crossover size LD, the low-frequency tail of the density of states follows D(ω)∼ω4 up to the vicinity of the lowest Goldstone mode frequency. We find that the sample-to-sample statistics of the minimal vibrational frequency in systems of size L<LD is Weibullian, with scaling exponents in excellent agreement with the ω4 law. We further show that the lowest-frequency modes are spatially quasilocalized and that their localization and associated quartic anharmonicity are largely frequency independent. The effect of preparation protocols on the low-frequency modes is elucidated, and a number of glassy length scales are briefly discussed.
- go to publisher's site
- Other links
- Other link
- © 2016 American Physical Society. - With supplemental material. - Erratum published: Phys. Rev. Lett. vol. 119 (2017), iss. 9, 099901.
If you believe that digital publication of certain material infringes any of your rights or (privacy) interests, please let the Library know, stating your reasons. In case of a legitimate complaint, the Library will make the material inaccessible and/or remove it from the website. Please Ask the Library, or send a letter to: Library of the University of Amsterdam, Secretariat, Singel 425, 1012 WP Amsterdam, The Netherlands. You will be contacted as soon as possible.