Cargando…
Dissipation induced by phonon elastic scattering in crystals
We demonstrate that the phonon elastic scattering leads to a dominant dissipation in crystals at low temperature. The two-level systems (TLSs) should be responsible for the elastic scattering, whereas the dissipation induced by static-point defects (SPDs) can not be neglected. One purpose of this wo...
Autores principales: | , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group
2016
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5036349/ https://www.ncbi.nlm.nih.gov/pubmed/27669517 http://dx.doi.org/10.1038/srep34148 |
_version_ | 1782455545018449920 |
---|---|
author | Li, Guolong Ren, Zhongzhou Zhang, Xin |
author_facet | Li, Guolong Ren, Zhongzhou Zhang, Xin |
author_sort | Li, Guolong |
collection | PubMed |
description | We demonstrate that the phonon elastic scattering leads to a dominant dissipation in crystals at low temperature. The two-level systems (TLSs) should be responsible for the elastic scattering, whereas the dissipation induced by static-point defects (SPDs) can not be neglected. One purpose of this work is to show how the energy splitting distribution of the TLS ensemble affects the dissipation. Besides, this article displays the proportion of phonon-TLS elastic scattering to total phonon dissipation. The coupling coefficient [Image: see text] of phonon-SPD scattering and the constant P(0) of the TLS distribution are important that we estimate their magnitudes in this paper. Our results is useful to understand the phonon dissipation mechanism, and give some clues to improve the performance of mechanical resonators, apply the desired defects, or reveal the atom configuration in lattice structure of disordered crystals. |
format | Online Article Text |
id | pubmed-5036349 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2016 |
publisher | Nature Publishing Group |
record_format | MEDLINE/PubMed |
spelling | pubmed-50363492016-09-30 Dissipation induced by phonon elastic scattering in crystals Li, Guolong Ren, Zhongzhou Zhang, Xin Sci Rep Article We demonstrate that the phonon elastic scattering leads to a dominant dissipation in crystals at low temperature. The two-level systems (TLSs) should be responsible for the elastic scattering, whereas the dissipation induced by static-point defects (SPDs) can not be neglected. One purpose of this work is to show how the energy splitting distribution of the TLS ensemble affects the dissipation. Besides, this article displays the proportion of phonon-TLS elastic scattering to total phonon dissipation. The coupling coefficient [Image: see text] of phonon-SPD scattering and the constant P(0) of the TLS distribution are important that we estimate their magnitudes in this paper. Our results is useful to understand the phonon dissipation mechanism, and give some clues to improve the performance of mechanical resonators, apply the desired defects, or reveal the atom configuration in lattice structure of disordered crystals. Nature Publishing Group 2016-09-26 /pmc/articles/PMC5036349/ /pubmed/27669517 http://dx.doi.org/10.1038/srep34148 Text en Copyright © 2016, The Author(s) http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
spellingShingle | Article Li, Guolong Ren, Zhongzhou Zhang, Xin Dissipation induced by phonon elastic scattering in crystals |
title | Dissipation induced by phonon elastic scattering in crystals |
title_full | Dissipation induced by phonon elastic scattering in crystals |
title_fullStr | Dissipation induced by phonon elastic scattering in crystals |
title_full_unstemmed | Dissipation induced by phonon elastic scattering in crystals |
title_short | Dissipation induced by phonon elastic scattering in crystals |
title_sort | dissipation induced by phonon elastic scattering in crystals |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5036349/ https://www.ncbi.nlm.nih.gov/pubmed/27669517 http://dx.doi.org/10.1038/srep34148 |
work_keys_str_mv | AT liguolong dissipationinducedbyphononelasticscatteringincrystals AT renzhongzhou dissipationinducedbyphononelasticscatteringincrystals AT zhangxin dissipationinducedbyphononelasticscatteringincrystals |