Femtosecond scattering dynamics in magnetic semiconductor spin superlattices

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

Research output: Contribution to journalArticlepeer-review

46 Scopus citations


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 languageEnglish (US)
Pages (from-to)601-604
Number of pages4
JournalPhysical review letters
Issue number4
StatePublished - 1993

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)


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