Ultrafast optical spin injection into image-potential states of Cu(001)

A. Winkelmann, F. Bisio, R. Ocaña, W. C. Lin, M. Nývlt, H. Petek, J. Kirschner

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17 Citations (Scopus)

Abstract

We report the observation of a net spin polarization in the n=1 image-potential state at the Cu(001) surface. The spin polarization is achieved by spin-selective multiphoton excitation of electrons from the spin-orbit split Cu d bands to the image-potential state using circularly polarized ultrafast light pulses. We show that by tuning the exciting photon energy, we can adjust the resonant coupling of the image-potential state to d bands of different double-group symmetry. This allows us to tune the spin polarization injected into the image-potential state.

Original languageEnglish
Article number226601
JournalPhysical Review Letters
Volume98
Issue number22
DOIs
Publication statusPublished - 2007 May 31

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Winkelmann, A., Bisio, F., Ocaña, R., Lin, W. C., Nývlt, M., Petek, H., & Kirschner, J. (2007). Ultrafast optical spin injection into image-potential states of Cu(001). Physical Review Letters, 98(22), [226601]. https://doi.org/10.1103/PhysRevLett.98.226601