Spin polarization of excitons in nonmagnetic quantum dots induced by a neighboring magnetic semiconductor quantum well

S. Lee, K. Park, M. Dobrowolska, J. K. Furdyna

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

The spin-coupling phenomena in a structure comprised of neighboring quantum dots (QD) and quantum wells (QW) was investigated. The magneto-photoluminescence (PL) experiments were carried out on double layer structures separated by a thin ZnSe barrier layer. Circular polarization was used to detect the PL signal and the degree of PL polarization from CdSe QDs in the double layer structures was much larger than that of single layers. The results show that the spin states in the double layer structures of the nonmagnetic QDs are strongly affected by the spins of carriers in the magnetic QW layer by exchange coupling between the two systems.

Original languageEnglish
Pages (from-to)7184-7186
Number of pages3
JournalJournal of Applied Physics
Volume95
Issue number11 II
DOIs
Publication statusPublished - 2004 Jun 1

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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