Spin tuning in magnetically coupled double quantum wells

J. F. Smyth, D. D. Awschalom, N. Samarth, H. Luo, J. K. Furdyna

Research output: Contribution to journalArticlepeer-review

23 Scopus citations


A variety of ZnSe/Zn1-xCdxSe double quantum wells coupled by a thin Zn1-yMnySe diluted magnetic semiconductor barrier have been fabricated by molecular-beam epitaxy and probed using magneto-optical photoluminescence spectroscopy. Spin splitting of the quantum confined ground states and the resulting large luminescence polarization are observed at low temperatures on tuning the barrier potential with a magnetic field. Measurements as a function of magnetic field, barrier thickness, and temperature reveal the dependence of the spin coupling between the quantum wells on the barrier's magnetization.

Original languageEnglish (US)
Pages (from-to)4340-4343
Number of pages4
JournalPhysical Review B
Issue number7
StatePublished - Jan 1 1992

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics


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