Tunable spin polarization in bismuth ultrathin film on Si(111)

Akari Takayama, Takafumi Sato, Seigo Souma, Tamio Oguchi, Takashi Takahashi

研究成果: Article査読

52 被引用数 (Scopus)

抄録

We performed a spin- and angle-resolved photoemission spectroscopy of bismuth ultrathin film on Si(111) with various film thickness d. We found that the spin polarization of spin-split Rashba surface states near the Brillouin-zone boundary, which is high (0.7) at d = 40 BL (bilayers), is gradually reduced on decreasing d and almost vanishes at d = 8 BL. This finding provides a novel method to generate spin-polarized electrons with tunable spin-polarization.

本文言語English
ページ(範囲)1776-1779
ページ数4
ジャーナルNano Letters
12
4
DOI
出版ステータスPublished - 2012 4 11
外部発表はい

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering

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