Femtosecond scattering dynamics in magnetic semiconductor spin superlattices

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

doi:10.1103/PhysRevLett.71.601

Femtosecond scattering dynamics in magnetic semiconductor spin superlattices

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

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Abstract

Spin-dependent dynamics of polarized carriers in a series of Zn1-xMnxSeZnSe superlattice structures are directly observed by time-resolved upconversion photoluminescence spectroscopy at low temperatures. Polarization measurements in small magnetic fields reveal spin-flip scattering of carriers confined within a magnetic quantum well. A marked change in the dynamics is observed with increasing field and subsequent spin superlattice formation. Exciton lifetimes and spin relaxation are seen to be strongly dependent on both the energy and location of spin states in the heterostructure.

Original language	English (US)
Pages (from-to)	601-604
Number of pages	4
Journal	Physical review letters
Volume	71
Issue number	4
DOIs	https://doi.org/10.1103/PhysRevLett.71.601
State	Published - 1993

All Science Journal Classification (ASJC) codes

Physics and Astronomy(all)

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10.1103/PhysRevLett.71.601

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abstract = "Spin-dependent dynamics of polarized carriers in a series of Zn1-xMnxSeZnSe superlattice structures are directly observed by time-resolved upconversion photoluminescence spectroscopy at low temperatures. Polarization measurements in small magnetic fields reveal spin-flip scattering of carriers confined within a magnetic quantum well. A marked change in the dynamics is observed with increasing field and subsequent spin superlattice formation. Exciton lifetimes and spin relaxation are seen to be strongly dependent on both the energy and location of spin states in the heterostructure.",

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AU - Smyth, J. F.

AU - Tulchinsky, D. A.

AU - Awschalom, D. D.

AU - Samarth, N.

AU - Luo, H.

AU - Furdyna, J. K.

PY - 1993

Y1 - 1993

N2 - Spin-dependent dynamics of polarized carriers in a series of Zn1-xMnxSeZnSe superlattice structures are directly observed by time-resolved upconversion photoluminescence spectroscopy at low temperatures. Polarization measurements in small magnetic fields reveal spin-flip scattering of carriers confined within a magnetic quantum well. A marked change in the dynamics is observed with increasing field and subsequent spin superlattice formation. Exciton lifetimes and spin relaxation are seen to be strongly dependent on both the energy and location of spin states in the heterostructure.

AB - Spin-dependent dynamics of polarized carriers in a series of Zn1-xMnxSeZnSe superlattice structures are directly observed by time-resolved upconversion photoluminescence spectroscopy at low temperatures. Polarization measurements in small magnetic fields reveal spin-flip scattering of carriers confined within a magnetic quantum well. A marked change in the dynamics is observed with increasing field and subsequent spin superlattice formation. Exciton lifetimes and spin relaxation are seen to be strongly dependent on both the energy and location of spin states in the heterostructure.

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JF - Physical review letters

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Femtosecond scattering dynamics in magnetic semiconductor spin superlattices

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