Two-Level Systems and Boson Peak Remain Stable in 110-Million-Year-Old Amber Glass release_to7kbgpktbbt3evfpz2wquf3zu

by Tomás Pérez-Castañeda, Rafael J. Jiménez-Riobóo, Miguel A. Ramos

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The two most prominent and ubiquitous features of glasses at low temperatures, namely the presence of tunneling two-level systems and the so-called boson peak in the reduced vibrational density of states, are shown to persist essentially unchanged in highly stabilized glasses, contrary to what was usually envisaged. Specifically, we have measured the specific heat of 110 million-year-old amber samples from El Soplao (Spain), both at very low temperatures and around the glass transition Tg. In particular, the amount of two-level systems, assessed at the lowest temperatures, was surprisingly found to be exactly the same for the pristine hyperaged amber as for the, subsequently, partially and fully rejuvenated samples.
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Type  article
Stage   submitted
Date   2014-05-21
Version   v1
Language   en ?
arXiv  1405.5438v1
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