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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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
Issue number21
Publication statusPublished - Jan 1 1992


All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

Zhang, F. C., Dai, N., Luo, H., Samarth, N., Dobrowolska, M., Furdyna, J. K., & Ram-Mohan, L. R. (1992). Observation of Localized Above-Barrier Excitons in Type-I Superlattices. Physical Review Letters, 68(21), 3220-3223. https://doi.org/10.1103/PhysRevLett.68.3220