Spin-Resolved Electronic Structure of Nanoscale Cobalt Islands on Cu(111)

O. Pietzsch, S. Okatov, A. Kubetzka, M. Bode, S. Heinze, A. Lichtenstein, and R. Wiesendanger
Phys. Rev. Lett. 96, 237203 – Published 15 June 2006
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Abstract

Using spin-polarized scanning tunneling spectroscopy, we reveal how the standing wave patterns of confined surface state electrons on top of nanometer-scale ferromagnetic Co islands on Cu(111) are affected by the spin character of the responsible state, thus experimentally confirming a very recent theoretical result [L. Niebergall et al., Phys. Rev. Lett. 96, 127204 (2006)]. Furthermore, at the rim of the islands a spin-polarized state is found giving rise to enhanced zero bias conductance. Its polarization is opposite to that of the islands. The experimental findings are in accordance with ab initio spin-density calculations.

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  • Received 2 March 2006

DOI:https://doi.org/10.1103/PhysRevLett.96.237203

©2006 American Physical Society

Authors & Affiliations

O. Pietzsch1,*, S. Okatov2, A. Kubetzka1, M. Bode1, S. Heinze1, A. Lichtenstein2, and R. Wiesendanger1

  • 1Institute of Applied Physics, University of Hamburg, Jungiusstrasse 11, D-20355 Hamburg, Germany
  • 2I. Institute of Theoretical Physics, University of Hamburg, Jungiusstrasse 9, D-20355 Hamburg, Germany

  • *Email address: pietzsch@physnet.uni-hamburg.de; Electronic address: http://www.nanoscience.de/group_r/stm-spstm/

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Issue

Vol. 96, Iss. 23 — 16 June 2006

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