Rashba effect in antimony and bismuth studied by spin-resolved ARPES

A. Takayama, T. Sato, S. Souma, T. Takahashi

研究成果: Article査読

28 被引用数 (Scopus)


We have performed spin- and angle-resolved photoemission spectroscopy of antimony (Sb) and bismuth (Bi) thin films grown on Si(111) to elucidate the nature of the Rashba effect in the spin-split surface bands. In Sb, we revealed spin polarization with the in-plane vortical texture on an elongated hole-like Fermi surface. The spin polarization is strongly momentum-dependent, almost vanishing at the region away from the Brillouin zone center. Such unusual suppression of the spin polarization is not observed in Bi, pointing to a strong influence from the quantized bulk bands on the surface spin polarization in Sb. The present result strongly suggests that bulk-surface interband scattering should be properly taken into account to understand the Rashba surface states in group-V semimetals.

ジャーナルNew Journal of Physics
出版ステータスPublished - 2014 5月

ASJC Scopus subject areas

  • 物理学および天文学(全般)


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