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arXiv · 1301.5991

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

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

We present angle-resolved photoemission data from Cu(111). Using a focused 6 eV continuous wave laser for photo-excitation, we achieve a high effective momentum resolution enabling the first detection of the Rashba spin splitting in the Shockley surface state on Cu(111). The magnitude of the spin-splitting of Delta k ~ 0.006 A^-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.

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A. Tamai, W. Meevasana, P. D. C. King, C. Nicholson, A. de la Torre, E. Rozbicki, F. Baumberger. 2013-01-25. Spin-orbit splitting of the Shockley surface state on Cu(111). https://doi.org/10.1103/physrevb.87.075113

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