Spin tuning in magnetically coupled double quantum wells

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

doi:10.1103/PhysRevB.46.4340

Spin tuning in magnetically coupled double quantum wells

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

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23 Scopus citations

Abstract

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 language	English (US)
Pages (from-to)	4340-4343
Number of pages	4
Journal	Physical Review B
Volume	46
Issue number	7
DOIs	https://doi.org/10.1103/PhysRevB.46.4340
State	Published - Jan 1 1992

All Science Journal Classification (ASJC) codes

Condensed Matter Physics

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AU - Awschalom, D. D.

AU - Samarth, N.

AU - Luo, H.

AU - Furdyna, J. K.

PY - 1992/1/1

Y1 - 1992/1/1

N2 - 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.

AB - 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.

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JO - Physical Review B

JF - Physical Review B

SN - 0163-1829

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Spin tuning in magnetically coupled double quantum wells

Abstract

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