Direct observation of the spin polarization in Au atomic wires on Si(553)
SCIE
SCOPUS
- Title
- Direct observation of the spin polarization in Au atomic wires on Si(553)
- Authors
- Yeom, HW; Jung, SW; Shin, JS; Kim, J; KIM, KEUN SU; Miyamoto, K; Okuda, T; Namatame, H; Kimura, A; Taniguchi, M
- Date Issued
- 2014-09-23
- Publisher
- IOP Publishing
- 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.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/13812
- DOI
- 10.1088/1367-2630/16/9/093030
- ISSN
- 1367-2630
- Article Type
- Article
- Citation
- NEW JOURNAL OF PHYSICS, vol. 16, 2014-09-23
- Files in This Item:
-
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.