Probing the non-Debye low frequency excitations in glasses through random pinning
| العنوان: | Probing the non-Debye low frequency excitations in glasses through random pinning |
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| المؤلفون: | Giorgio Parisi, Luca Angelani, Matteo Paoluzzi, Giancarlo Ruocco |
| المصدر: | Proceedings of the National Academy of Sciences of the United States of America 115 (2018): 8700–8704. doi:10.1073/pnas.1805024115 info:cnr-pdr/source/autori:Angelani L.; Paoluzzi M.; Parisi G.; Ruocco G./titolo:Probing the non-Debye low-frequency excitations in glasses through random pinning/doi:10.1073%2Fpnas.1805024115/rivista:Proceedings of the National Academy of Sciences of the United States of America/anno:2018/pagina_da:8700/pagina_a:8704/intervallo_pagine:8700–8704/volume:115 Proceedings of the National Academy of Sciences |
| سنة النشر: | 2018 |
| مصطلحات موضوعية: | Field (physics), FOS: Physical sciences, 3d model, 02 engineering and technology, Low frequency, 01 natural sciences, Power law, symbols.namesake, 0103 physical sciences, Low temperature, 010306 general physics, Condensed Matter - Statistical Mechanics, Debye, Physics, Multidisciplinary, Statistical Mechanics (cond-mat.stat-mech), Condensed matter physics, Glasses, Spectrum (functional analysis), Zero (complex analysis), Inherent structures, Disordered Systems and Neural Networks (cond-mat.dis-nn), Condensed Matter - Disordered Systems and Neural Networks, 021001 nanoscience & nanotechnology, Physical Sciences, Density of states, symbols, Non-Debye law, Energy spectrum, 0210 nano-technology |
| الوصف: | We investigate the properties of the low-frequency spectrum in the density of states $D(\omega)$ of a three-dimensional model glass former. To magnify the Non-Debye sector of the spectrum, we introduce a random pinning field that freezes a finite particle fraction in order to break the translational invariance and shifts all the vibrational frequencies of the extended modes towards higher frequencies. We show that Non-Debye soft localized modes progressively emerge as the fraction $p$ of pinned particles increases. Moreover, the low-frequency tail of $D(\omega)$ goes to zero as a power law $\omega^{\delta(p)}$, with $2 \!\leq \! \delta(p) \!\leq\!4$ and $\delta\!=\!4$ above a threshold fraction $p_{th}$. Comment: 4 Figures, submitted to PNAS |
| اللغة: | English |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0c332685817cc6ca99426e32da6945f9 http://arxiv.org/abs/1803.05520 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....0c332685817cc6ca99426e32da6945f9 |
| قاعدة البيانات: | OpenAIRE |
| الوصف غير متاح. |