Dynamic process of self-trapped polaron in photoexcited SrTiO3

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

doi:10.1016/j.physleta.2008.01.002

Dynamic process of self-trapped polaron in photoexcited SrTiO₃

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

Electrical and Computer Engineering

Research output: Contribution to journal › Article › peer-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 language	English (US)
Pages (from-to)	2920-2924
Number of pages	5
Journal	Physics Letters, Section A: General, Atomic and Solid State Physics
Volume	372
Issue number	16
DOIs	https://doi.org/10.1016/j.physleta.2008.01.002
State	Published - Apr 14 2008

Keywords

Dynamics
Luminescence
Photoexcitation
Self-trapped polaron

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10.1016/j.physleta.2008.01.002

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title = "Dynamic process of self-trapped polaron in photoexcited SrTiO3",

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.",

keywords = "Dynamics, Luminescence, Photoexcitation, Self-trapped polaron",

author = "Yu Qiu and Jiang, {Yong Jin} and Tong, {Guo Ping} and Zhang, {Jie Fang}",

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T1 - Dynamic process of self-trapped polaron in photoexcited SrTiO3

AU - Qiu, Yu

AU - Jiang, Yong Jin

AU - Tong, Guo Ping

AU - Zhang, Jie Fang

PY - 2008/4/14

Y1 - 2008/4/14

N2 - 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.

AB - 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.

KW - Dynamics

KW - Luminescence

KW - Photoexcitation

KW - Self-trapped polaron

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EP - 2924

JO - Physics Letters, Section A: General, Atomic and Solid State Physics

JF - Physics Letters, Section A: General, Atomic and Solid State Physics

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