Strong Electron-Phonon and Band Structure Effects in the Optical Properties of High Pressure Metallic Hydrogen

Physical Review Letters
Miguel BorinagaIon Errea

Abstract

The recent claim of having produced metallic hydrogen in the laboratory relies on measurements of optical spectra. Here, we present first-principles calculations of the reflectivity of hydrogen between 400 and 600 GPa in the I4_{1}/amd crystal structure, the one predicted at these pressures, based on both time-dependent density functional and Eliashberg theories, thus, covering the optical properties from the infrared to the ultraviolet regimes. Our results show that atomic hydrogen displays an interband plasmon at around 6 eV that abruptly suppresses the reflectivity, while the large superconducting gap energy yields a sharp decrease of the reflectivity in the infrared region approximately at 120 meV. The experimentally estimated electronic scattering rates in the 0.7-3 eV range are in agreement with our theoretical estimations, which show that the huge electron-phonon interaction of the system dominates the electronic scattering in this energy range. The remarkable features in the optical spectra predicted here encourage extending the optical measurements to the infrared and ultraviolet regions as our results suggest optical measurements can potentially identify high-pressure phases of hydrogen.

References

Jul 1, 1990·Physical Review. B, Condensed Matter·N E BickersZ Schlesinger
Jun 15, 1992·Physical Review. B, Condensed Matter·J P Perdew, Y Wang
Oct 26, 1987·Physical Review Letters·Z SchlesingerF Holtzberg
Feb 19, 1996·Physical Review Letters·M PetersilkaE K Gross
Oct 28, 1996·Physical Review Letters·J P PerdewM Ernzerhof
Nov 22, 2001·Proceedings of the National Academy of Sciences of the United States of America·A F GoncharovH Mao
Jun 4, 2008·Physical Review Letters·Shanti Deemyad, Isaac F Silvera
Jul 23, 2008·Physical Review Letters·P CudazzoE K U Gross
May 24, 2011·Physical Review Letters·Jeffrey M McMahon, David M Ceperley
Aug 12, 2009·Journal of Physics. Condensed Matter : an Institute of Physics Journal·A PerucchiS Lupi
Sep 30, 2009·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Paolo GiannozziRenata M Wentzcovitch
Nov 15, 2011·Nature Materials·M I Eremets, I A Troyan
Dec 7, 2011·Proceedings of the National Academy of Sciences of the United States of America·Ho-Kwang MaoRajeev Ahuja
May 1, 2012·Physical Review Letters·Ross T HowieEugene Gregoryanz
May 1, 2012·Physical Review Letters·Chang-Sheng ZhaRussell J Hemley
Jun 12, 2013·Physical Review Letters·Chang-sheng ZhaRussell J Hemley
Feb 24, 2015·Nature Materials·Ross T HowieEugene Gregoryanz
Jan 8, 2016·Nature·Philip Dalladay-SimpsonEugene Gregoryanz
Oct 8, 2016·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Miguel BorinagaIon Errea
Jan 28, 2017·Science·Ranga P Dias, Isaac F Silvera
Sep 28, 2017·Physical Review Letters·Chang-Sheng ZhaRussell J Hemley

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Citations

May 12, 2018·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Isaac F Silvera, Ranga Dias
Oct 21, 2020·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Mehmet DoganMarvin L Cohen

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