Direct observation of the spin polarization in Au atomic wires on Si(553)

H. W. Yeom, S. W. Jung, J. S. Shin, J. Kim, K. S. Kim, K. Miyamoto, T. Okuda, H. Namatame, A. Kimura, M. Taniguchi

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

The spin-resolved electronic band structure of Au-induced metallic atomic wires on a vicinal silicon surface, Si(553), was investigated using spin- and angle-resolved photoelectron spectroscopy. We directly measured the spin polarization of three partially filled one-dimensional metallic bands, a one-third-filled band, and the doublet of nearly half-filled bands. For the half-filled doublet, the strong apparent spin polarization was observed near the Fermi energy with a minor out-of-plane spin component. This observation is consistent with the Rashba-type spin-orbit splitting and with a recent experiment on a similar doublet of Si(557)-Au. In contrast, the one-third-filled band does not show a substantial spin polarization within the experimental accuracy, indicating a much smaller spin splitting, if any. These results are discussed for the origin of the partially filled bands and for the intriguing broken-symmetry ground state observed at low temperature.

Original languageEnglish
Article number093030
JournalNew Journal of Physics
Volume16
DOIs
Publication statusPublished - 2014 Sep 23

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Fingerprint Dive into the research topics of 'Direct observation of the spin polarization in Au atomic wires on Si(553)'. Together they form a unique fingerprint.

  • Cite this

    Yeom, H. W., Jung, S. W., Shin, J. S., Kim, J., Kim, K. S., Miyamoto, K., Okuda, T., Namatame, H., Kimura, A., & Taniguchi, M. (2014). Direct observation of the spin polarization in Au atomic wires on Si(553). New Journal of Physics, 16, [093030]. https://doi.org/10.1088/1367-2630/16/9/093030