Nearly degenerate time-resolved Faraday rotation in an interacting exciton system

Yumin Shen; A. M. Goebel; G. Khitrova; H. M. Gibbs; Hailin Wang

doi:10.1103/PhysRevB.72.233307

Nearly degenerate time-resolved Faraday rotation in an interacting exciton system

Yumin Shen, A. M. Goebel, G. Khitrova, H. M. Gibbs, Hailin Wang

Optical Sciences, College of

Research output: Contribution to journal › Article › peer-review

11 Scopus citations

Abstract

We report experimental studies of nearly degenerate time-resolved Faraday rotation (TRFR) of electron spin precession in an interacting exciton system. We show that many-body interactions between excitons strongly modify the TRFR response through the coupling of the spin coherence to two-exciton states. The striking difference between TRFR and transient differential absorption (DA) further reveals that exciton-exciton interactions play crucial but qualitatively different roles in TRFR and DA.

Original language	English (US)
Article number	233307
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	72
Issue number	23
DOIs	https://doi.org/10.1103/PhysRevB.72.233307
State	Published - Dec 15 2005

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1103/PhysRevB.72.233307

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abstract = "We report experimental studies of nearly degenerate time-resolved Faraday rotation (TRFR) of electron spin precession in an interacting exciton system. We show that many-body interactions between excitons strongly modify the TRFR response through the coupling of the spin coherence to two-exciton states. The striking difference between TRFR and transient differential absorption (DA) further reveals that exciton-exciton interactions play crucial but qualitatively different roles in TRFR and DA.",

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AU - Shen, Yumin

AU - Goebel, A. M.

AU - Khitrova, G.

AU - Gibbs, H. M.

AU - Wang, Hailin

PY - 2005/12/15

Y1 - 2005/12/15

N2 - We report experimental studies of nearly degenerate time-resolved Faraday rotation (TRFR) of electron spin precession in an interacting exciton system. We show that many-body interactions between excitons strongly modify the TRFR response through the coupling of the spin coherence to two-exciton states. The striking difference between TRFR and transient differential absorption (DA) further reveals that exciton-exciton interactions play crucial but qualitatively different roles in TRFR and DA.

AB - We report experimental studies of nearly degenerate time-resolved Faraday rotation (TRFR) of electron spin precession in an interacting exciton system. We show that many-body interactions between excitons strongly modify the TRFR response through the coupling of the spin coherence to two-exciton states. The striking difference between TRFR and transient differential absorption (DA) further reveals that exciton-exciton interactions play crucial but qualitatively different roles in TRFR and DA.

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Nearly degenerate time-resolved Faraday rotation in an interacting exciton system

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