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A Spectroscopic Study of the Insulator–Metal Transition in Liquid Hydrogen and Deuterium
The insulator‐to‐metal transition in dense fluid hydrogen is an essential phenomenon in the study of gas giant planetary interiors and the physical and chemical behavior of highly compressed condensed matter. Using direct fast laser spectroscopy techniques to probe hydrogen and deuterium precompress...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
John Wiley and Sons Inc.
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6974937/ https://www.ncbi.nlm.nih.gov/pubmed/31993284 http://dx.doi.org/10.1002/advs.201901668 |
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author | Jiang, Shuqing Holtgrewe, Nicholas Geballe, Zachary M. Lobanov, Sergey S. Mahmood, Mohammad F. McWilliams, R. Stewart Goncharov, Alexander F. |
author_facet | Jiang, Shuqing Holtgrewe, Nicholas Geballe, Zachary M. Lobanov, Sergey S. Mahmood, Mohammad F. McWilliams, R. Stewart Goncharov, Alexander F. |
author_sort | Jiang, Shuqing |
collection | PubMed |
description | The insulator‐to‐metal transition in dense fluid hydrogen is an essential phenomenon in the study of gas giant planetary interiors and the physical and chemical behavior of highly compressed condensed matter. Using direct fast laser spectroscopy techniques to probe hydrogen and deuterium precompressed in a diamond anvil cell and laser heated on microsecond timescales, an onset of metal‐like reflectance is observed in the visible spectral range at P >150 GPa and T ≥ 3000 K. The reflectance increases rapidly with decreasing photon energy indicating free‐electron metallic behavior with a plasma edge in the visible spectral range at high temperatures. The reflectance spectra also suggest much longer electronic collision time (≥1 fs) than previously inferred, implying that metallic hydrogen at the conditions studied is not in the regime of saturated conductivity (Mott–Ioffe–Regel limit). The results confirm the existence of a semiconducting intermediate fluid hydrogen state en route to metallization. |
format | Online Article Text |
id | pubmed-6974937 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | John Wiley and Sons Inc. |
record_format | MEDLINE/PubMed |
spelling | pubmed-69749372020-01-28 A Spectroscopic Study of the Insulator–Metal Transition in Liquid Hydrogen and Deuterium Jiang, Shuqing Holtgrewe, Nicholas Geballe, Zachary M. Lobanov, Sergey S. Mahmood, Mohammad F. McWilliams, R. Stewart Goncharov, Alexander F. Adv Sci (Weinh) Full Papers The insulator‐to‐metal transition in dense fluid hydrogen is an essential phenomenon in the study of gas giant planetary interiors and the physical and chemical behavior of highly compressed condensed matter. Using direct fast laser spectroscopy techniques to probe hydrogen and deuterium precompressed in a diamond anvil cell and laser heated on microsecond timescales, an onset of metal‐like reflectance is observed in the visible spectral range at P >150 GPa and T ≥ 3000 K. The reflectance increases rapidly with decreasing photon energy indicating free‐electron metallic behavior with a plasma edge in the visible spectral range at high temperatures. The reflectance spectra also suggest much longer electronic collision time (≥1 fs) than previously inferred, implying that metallic hydrogen at the conditions studied is not in the regime of saturated conductivity (Mott–Ioffe–Regel limit). The results confirm the existence of a semiconducting intermediate fluid hydrogen state en route to metallization. John Wiley and Sons Inc. 2019-11-27 /pmc/articles/PMC6974937/ /pubmed/31993284 http://dx.doi.org/10.1002/advs.201901668 Text en © 2019 The Authors. Published by WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Full Papers Jiang, Shuqing Holtgrewe, Nicholas Geballe, Zachary M. Lobanov, Sergey S. Mahmood, Mohammad F. McWilliams, R. Stewart Goncharov, Alexander F. A Spectroscopic Study of the Insulator–Metal Transition in Liquid Hydrogen and Deuterium |
title | A Spectroscopic Study of the Insulator–Metal Transition in Liquid Hydrogen and Deuterium |
title_full | A Spectroscopic Study of the Insulator–Metal Transition in Liquid Hydrogen and Deuterium |
title_fullStr | A Spectroscopic Study of the Insulator–Metal Transition in Liquid Hydrogen and Deuterium |
title_full_unstemmed | A Spectroscopic Study of the Insulator–Metal Transition in Liquid Hydrogen and Deuterium |
title_short | A Spectroscopic Study of the Insulator–Metal Transition in Liquid Hydrogen and Deuterium |
title_sort | spectroscopic study of the insulator–metal transition in liquid hydrogen and deuterium |
topic | Full Papers |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6974937/ https://www.ncbi.nlm.nih.gov/pubmed/31993284 http://dx.doi.org/10.1002/advs.201901668 |
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