First-principles Study of Rashba Effect in Ultra-thin Bismuth Surface Alloys

Abstract

We performed density functional calculations for ultra-thin bismuth surface alloys: surface alloys of bismuth and face-centered cubic metals Bi/$M$(111)-$(\sqrt{3}\times \sqrt{3})R30°$ ($M$=Cu, Ag, Au, Ni, Co, and Fe). Our calculated Rashba parameters for the Bi/Ag are consistent with the previous experimental and theoretical results. We predicted a trend in the Rashba coefficients ${\alpha }_R$ of bands around the Fermi energy for noble metals as follows: Bi/Ag > Bi/Cu > Bi/Au. As for the transition metals, there is a trend in ${\alpha }_R$: Bi/Ni > Bi/Co > Bi/Fe. Our finding may lead to design efficient spin-charge conversion materials.

4 pages, 3 figures

References in corpus (1)

• The Structural Influence on the Rashba-type Spin-Splitting in Surface Alloys

Cited by in corpus (1)

• First-principles Study of Rashba Spin Splitting at Strained SrTiO3(001) Surfaces