Probing the non-Debye low-frequency excitations in glasses through random pinning. Angelani, L., Paoluzzi, M., Parisi, G., & Ruocco, G. Proceedings of the National Academy of Sciences of the United States of America, 115(35):8700-8704, National Academy of Sciences, 2018. cited By 14
Paper doi abstract bibtex We investigate the properties of the low-frequency spectrum in the density of states D(ω) of a 3D model glass former. To magnify the non-Debye sector of the spectrum, we introduce a random pinning field that freezes a finite particle fraction to break the translational invariance and shifts all of the vibrational frequencies of the extended modes toward 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(ω) goes to zero as a power law ωδ(p), with 2 ≤ δ(p) ≤ 4 and δ = 4 above a threshold fraction pth. © National Academy of Sciences. All rights reserved.
@ARTICLE{Angelani20188700,
author={Angelani, L. and Paoluzzi, M. and Parisi, G. and Ruocco, G.},
title={Probing the non-Debye low-frequency excitations in glasses through random pinning},
journal={Proceedings of the National Academy of Sciences of the United States of America},
year={2018},
volume={115},
number={35},
pages={8700-8704},
doi={10.1073/pnas.1805024115},
note={cited By 14},
url={https://www.scopus.com/inward/record.uri?eid=2-s2.0-85053632735&doi=10.1073%2fpnas.1805024115&partnerID=40&md5=1df6bc607055e0e0057d8709fa1f1507},
abstract={We investigate the properties of the low-frequency spectrum in the density of states D(ω) of a 3D model glass former. To magnify the non-Debye sector of the spectrum, we introduce a random pinning field that freezes a finite particle fraction to break the translational invariance and shifts all of the vibrational frequencies of the extended modes toward 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(ω) goes to zero as a power law ωδ(p), with 2 ≤ δ(p) ≤ 4 and δ = 4 above a threshold fraction pth. © National Academy of Sciences. All rights reserved.},
publisher={National Academy of Sciences},
issn={00278424},
coden={PNASA},
pubmed_id={30104381},
document_type={Article},
source={Scopus},
}
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