Ultrafast Relaxation of Symmetry-Breaking Photo-Induced Atomic Forces

We present a first-principles method for the calculation of the temperature-dependent relaxation of symmetry-breaking atomic driving forces in photoexcited systems. We calculate the phonon-assisted decay of the photoexcited force on the low-symmetry E_{g} mode following absorption of an ultrafast pu...

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Veröffentlicht in:	Physical review letters 2019-08, Vol.123 (8), p.087401-087401, Article 087401
Hauptverfasser:	O'Mahony, Shane M, Murphy-Armando, Felipe, Murray, Éamonn D, Querales-Flores, José D, Savić, Ivana, Fahy, Stephen
Format:	Artikel
Sprache:	eng
Schlagworte:	Antimony Bismuth Broken symmetry Decay rate First principles Mathematical analysis Phonons Photons Symmetry Temperature dependence
Online-Zugang:	Volltext
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