Enhanced spin interactions in digital magnetic heterostructures

S. A. Crooker, D. A. Tulchinsky, J. Levy, D. D. Awschalom, R. Garcia, N. Samarth

Research output: Contribution to journalArticlepeer-review

117 Scopus citations

Abstract

A new heterostructure is developed in which fractional monolayers of magnetic ions are introduced "digitally" within a semiconductor quantum well. Rearranging moments within two-dimensional (2D) planes provides additional control over their interactions, yielding tunable two-level electronic systems in which spin splittings are significantly larger than inhomogeneous linewidths in modest magnetic fields. Femtosecond-resolved electronic and magnetic spectroscopies reveal spin-flip scattering dependent only on the Zeeman energy but not the local magnetic environment, and long-lived dynamic magnetizations.

Original languageEnglish (US)
Pages (from-to)505-508
Number of pages4
JournalPhysical review letters
Volume75
Issue number3
DOIs
StatePublished - 1995

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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