Dynamic process of self-trapped polaron in photoexcited SrTiO3

Yu Qiu, Yong Jin Jiang, Guo Ping Tong, Jie Fang Zhang

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

Relaxation process of self-trapped polaron is investigated by a nonadiabatic molecular dynamic method. We show localized disorder due to lattice fluctuations can give rise to a tightly-bound electronic state in ultraviolet illuminated SrTiO3 crystal. This bound state is actually a self-trapped polaron in accordance with the experimentally observed large Stokes-shift. The formation of the self-trapped polaron is shown to be an ultrafast process.

Original languageEnglish (US)
Pages (from-to)2920-2924
Number of pages5
JournalPhysics Letters, Section A: General, Atomic and Solid State Physics
Volume372
Issue number16
DOIs
StatePublished - Apr 14 2008

Keywords

  • Dynamics
  • Luminescence
  • Photoexcitation
  • Self-trapped polaron

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