Observation of Localized Above-Barrier Excitons in Type-I Superlattices

F. C. Zhang, N. Dai, H. Luo, Nitin Samarth, M. Dobrowolska, J. K. Furdyna, L. R. Ram-Mohan

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Abstract

This Letter reports experimental evidence for the existence of localized excitons at above-barrier energies in type-I superlattices. By using magnetoabsorption measurement on a series of Zn0.86Cd0.14Se/Zn0.75Mn0.25Se superlattices, where the subbands localized in nonmagnetic and magnetic layers undergo drastically different Zeeman splittings, we show conclusively that above-barrier excitons are localized in the barrier rather than in the well regions.

Original languageEnglish (US)
Pages (from-to)3220-3223
Number of pages4
JournalPhysical Review Letters
Volume68
Issue number21
DOIs
StatePublished - Jan 1 1992

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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