Spatiotemporal near-field spin microscopy in patterned magnetic heterostructures

J. Levy, V. Nikitin, J. M. Kikkawa, A. Cohen, Nitin Samarth, R. Garcia, D. D. Awschalom

Research output: Contribution to journalArticle

84 Citations (Scopus)

Abstract

Low temperature femtosecond-resolved near-field scanning optical microscopy is used to image excitonic spin behavior in locally disordered magnetic semiconductor heterostructures. A contrast between luminescence intensity and polarization profiles yields marked differences between carrier diffusion and spin transport over a spin-dependent energy landscape sharply defined by focused ion beam implantation. Space-time spectroscopies reveal a spin component to the exciton evolution in the presence of a magnetic field. Fundamental limitations on the measurement of circularly polarized luminescence in the near field are also demonstrated.

Original languageEnglish (US)
Pages (from-to)1948-1951
Number of pages4
JournalPhysical Review Letters
Volume76
Issue number11
DOIs
StatePublished - Mar 11 1996

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near fields
microscopy
luminescence
implantation
ion beams
excitons
scanning
polarization
profiles
magnetic fields
spectroscopy
energy

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

Levy, J., Nikitin, V., Kikkawa, J. M., Cohen, A., Samarth, N., Garcia, R., & Awschalom, D. D. (1996). Spatiotemporal near-field spin microscopy in patterned magnetic heterostructures. Physical Review Letters, 76(11), 1948-1951. https://doi.org/10.1103/PhysRevLett.76.1948
Levy, J. ; Nikitin, V. ; Kikkawa, J. M. ; Cohen, A. ; Samarth, Nitin ; Garcia, R. ; Awschalom, D. D. / Spatiotemporal near-field spin microscopy in patterned magnetic heterostructures. In: Physical Review Letters. 1996 ; Vol. 76, No. 11. pp. 1948-1951.
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Levy, J, Nikitin, V, Kikkawa, JM, Cohen, A, Samarth, N, Garcia, R & Awschalom, DD 1996, 'Spatiotemporal near-field spin microscopy in patterned magnetic heterostructures', Physical Review Letters, vol. 76, no. 11, pp. 1948-1951. https://doi.org/10.1103/PhysRevLett.76.1948

Spatiotemporal near-field spin microscopy in patterned magnetic heterostructures. / Levy, J.; Nikitin, V.; Kikkawa, J. M.; Cohen, A.; Samarth, Nitin; Garcia, R.; Awschalom, D. D.

In: Physical Review Letters, Vol. 76, No. 11, 11.03.1996, p. 1948-1951.

Research output: Contribution to journalArticle

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AU - Nikitin, V.

AU - Kikkawa, J. M.

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AU - Garcia, R.

AU - Awschalom, D. D.

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