Journal
PHYSICAL REVIEW B
Volume 87, Issue 7, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.87.075113
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Funding
- European Research Council
- Scottish Funding Council
- UK EPSRC
- EPSRC [EP/I031014/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/I031014/1] Funding Source: researchfish
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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. DOI: 10.1103/PhysRevB.87.075113
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