Role of d orbitals in the Rashba-type spin splitting for noble-metal surfaces

Hyungjun Lee, Hyoung Joon Choi

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

We investigate the Rashba-type spin splitting in the Shockley surface states on Au(111) and Ag(111) surfaces, based on first-principles calculations. By turning on and off spin-orbit interaction (SOI) partly, we show that although the surface states are mainly of p-orbital character with only a small d-orbital one, d-channel SOI determines the splitting and the spin direction while p-channel SOI has minor and negative effects. The small d-orbital character of the surface states, present even without SOI, varies linearly with the crystal momentum k, resulting in the linear k dependence of the splitting, the hallmark of the Rashba type. As a way to perturb the d-orbital character of the surface states, we discuss effects of electron and hole doping to the Au(111) surface.

Original languageEnglish
Article number045437
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume86
Issue number4
DOIs
Publication statusPublished - 2012 Jul 23

Fingerprint

Surface states
Precious metals
noble metals
metal surfaces
Orbits
spin-orbit interactions
orbitals
Momentum
Doping (additives)
Crystals
Electrons
momentum
crystals
electrons

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

@article{8f8e9b2b526141e18cf4eaf365bec02f,
title = "Role of d orbitals in the Rashba-type spin splitting for noble-metal surfaces",
abstract = "We investigate the Rashba-type spin splitting in the Shockley surface states on Au(111) and Ag(111) surfaces, based on first-principles calculations. By turning on and off spin-orbit interaction (SOI) partly, we show that although the surface states are mainly of p-orbital character with only a small d-orbital one, d-channel SOI determines the splitting and the spin direction while p-channel SOI has minor and negative effects. The small d-orbital character of the surface states, present even without SOI, varies linearly with the crystal momentum k, resulting in the linear k dependence of the splitting, the hallmark of the Rashba type. As a way to perturb the d-orbital character of the surface states, we discuss effects of electron and hole doping to the Au(111) surface.",
author = "Hyungjun Lee and Choi, {Hyoung Joon}",
year = "2012",
month = "7",
day = "23",
doi = "10.1103/PhysRevB.86.045437",
language = "English",
volume = "86",
journal = "Physical Review B-Condensed Matter",
issn = "1098-0121",
publisher = "American Physical Society",
number = "4",

}

Role of d orbitals in the Rashba-type spin splitting for noble-metal surfaces. / Lee, Hyungjun; Choi, Hyoung Joon.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 86, No. 4, 045437, 23.07.2012.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Role of d orbitals in the Rashba-type spin splitting for noble-metal surfaces

AU - Lee, Hyungjun

AU - Choi, Hyoung Joon

PY - 2012/7/23

Y1 - 2012/7/23

N2 - We investigate the Rashba-type spin splitting in the Shockley surface states on Au(111) and Ag(111) surfaces, based on first-principles calculations. By turning on and off spin-orbit interaction (SOI) partly, we show that although the surface states are mainly of p-orbital character with only a small d-orbital one, d-channel SOI determines the splitting and the spin direction while p-channel SOI has minor and negative effects. The small d-orbital character of the surface states, present even without SOI, varies linearly with the crystal momentum k, resulting in the linear k dependence of the splitting, the hallmark of the Rashba type. As a way to perturb the d-orbital character of the surface states, we discuss effects of electron and hole doping to the Au(111) surface.

AB - We investigate the Rashba-type spin splitting in the Shockley surface states on Au(111) and Ag(111) surfaces, based on first-principles calculations. By turning on and off spin-orbit interaction (SOI) partly, we show that although the surface states are mainly of p-orbital character with only a small d-orbital one, d-channel SOI determines the splitting and the spin direction while p-channel SOI has minor and negative effects. The small d-orbital character of the surface states, present even without SOI, varies linearly with the crystal momentum k, resulting in the linear k dependence of the splitting, the hallmark of the Rashba type. As a way to perturb the d-orbital character of the surface states, we discuss effects of electron and hole doping to the Au(111) surface.

UR - http://www.scopus.com/inward/record.url?scp=84864624800&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84864624800&partnerID=8YFLogxK

U2 - 10.1103/PhysRevB.86.045437

DO - 10.1103/PhysRevB.86.045437

M3 - Article

AN - SCOPUS:84864624800

VL - 86

JO - Physical Review B-Condensed Matter

JF - Physical Review B-Condensed Matter

SN - 1098-0121

IS - 4

M1 - 045437

ER -