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

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

Research output: Contribution to journalArticle

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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

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wire
polarization
broken symmetry
photoelectron spectroscopy
orbits
ground state
silicon
electronics
energy

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

Yeom, H. W., Jung, S. W., Shin, J. S., Kim, J., Kim, K. S., Miyamoto, K., ... 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
Yeom, H. W. ; Jung, S. W. ; Shin, J. S. ; Kim, J. ; Kim, Keun Su ; Miyamoto, K. ; Okuda, T. ; Namatame, H. ; Kimura, A. ; Taniguchi, M. / Direct observation of the spin polarization in Au atomic wires on Si(553). In: New Journal of Physics. 2014 ; Vol. 16.
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Yeom, HW, Jung, SW, Shin, JS, Kim, J, Kim, KS, 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, vol. 16, 093030. https://doi.org/10.1088/1367-2630/16/9/093030

Direct observation of the spin polarization in Au atomic wires on Si(553). / Yeom, H. W.; Jung, S. W.; Shin, J. S.; Kim, J.; Kim, Keun Su; Miyamoto, K.; Okuda, T.; Namatame, H.; Kimura, A.; Taniguchi, M.

In: New Journal of Physics, Vol. 16, 093030, 23.09.2014.

Research output: Contribution to journalArticle

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AU - Yeom, H. W.

AU - Jung, S. W.

AU - Shin, J. S.

AU - Kim, J.

AU - Kim, Keun Su

AU - Miyamoto, K.

AU - Okuda, T.

AU - Namatame, H.

AU - Kimura, A.

AU - Taniguchi, M.

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