Details

Autor(en) / Beteiligte

• Kuskovsky, I. L.
• Mourokh, L. G.
• Roy, B.
• Ji, H.
• Dhomkar, S.
• Ludwig, J.
• Smirnov, D.
• Tamargo, M. C.

Titel

Decoherence in semiconductor nanostructures with type-II band alignment: All-optical measurements using Aharonov-Bohm excitons

Ist Teil von

• Physical review. B, 2017-04, Vol.95 (16), p.165445, Article 165445

Ort / Verlag

College Park: American Physical Society

Erscheinungsjahr

2017

Link zum Volltext

Quelle

American Physical Society

Beschreibungen/Notizen

• We examine the temperature dependence of the visibility of the excitonic Aharonov-Bohm peak in type-II quantum dots. We obtain a functional temperature dependence that is similar to that determined by transport experiments, namely, with the T−1 term due to electron-electron collisions and the T−3 term due to electron-phonon interactions. However, the magnitude of the latter term is much smaller than that for the transport electrons and similar to the interaction strength of the exciton-phonon coupling. Such suppressed electron-phonon interaction ushers a way for all-optical studies of decoherence processes in semiconductor nanostructures as other dephasing mechanisms become more pronounced.