Spin-orbit splitting of the Shockley surface state on Cu(111)

A. Tamai*, W. Meevasana, P. D. C. King, C. W. Nicholson, A. de la Torre, E. Rozbicki, F. Baumberger

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

73 Citations (Scopus)

Abstract

We present angle-resolved photoemission data from Cu(111). Using a focused 6 eV continuous-wave laser for photoexcitation, we achieve a high effective momentum resolution, enabling detection of the Rashba spin splitting in the Shockley surface state on Cu(111). The magnitude of the spin splitting of Delta k similar to 0.006 angstrom(-1) is surprisingly large and exceeds values predicted for the analogous surface state on Ag(111), but is reproduced by first-principles calculations. We further resolve a kink in the dispersion, which we attribute to electron-phonon coupling.

Original languageEnglish
Article number075113
Number of pages5
JournalPhysical Review. B, Condensed matter and materials physics
Volume87
Issue number7
DOIs
Publication statusPublished - 13 Feb 2013

Keywords

  • HIGH-RESOLUTION PHOTOEMISSION
  • 2-DIMENSIONAL ELECTRON-GAS
  • CONFINEMENT
  • SRTIO3

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