Exciton vs Self-Trapped Exciton

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SUMMARY

Self-Trapped Excitons (STEs) and regular excitons are distinct entities in the realm of condensed matter physics. While both can exhibit propagation characteristics, STEs are specifically characterized by their momentary trapping within a material. The differentiation is crucial for understanding exciton dynamics, as highlighted in the seminal paper "Free, quasifree, momentarily trapped, and self-trapped exciton states in molecular crystals" by Jai Singh and A. Matsui, published in Physical Review B in 1987.

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  • Understanding of exciton theory
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  • Research the properties of excitons in different materials
  • Study the implications of self-trapping in molecular crystals
  • Explore the experimental techniques used to observe exciton states
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Physicists, materials scientists, and researchers interested in exciton behavior and dynamics in condensed matter systems.

Gonzolo
Why would anyone bother with the adjective "Self-Trapped" for an exciton and quote the abbreviation "STE"? Are they identically the same thing or not?
 
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They are different. They can propagate or not. I could not tell much. See for instance :
"Free, quasifree, momentarily trapped, and self-trapped exciton states in molecular crystals", Singh, Jai; Matsui, A., Physical Review B (Condensed Matter), Volume 36, Issue 11, October 15, 1987, pp.6094-6098.
 

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