RT Journal Article T1 Electron wave function at a vicinal surface: switch from terrace to step modulation A1 Ortega, J. V. A1 Speller, S. A1 Bachmann, A. R. A1 Mascaraque Susunaga, Arantzazu A1 Michel, E. G. A1 Narmann, A. A1 Mugarza, A. A1 Rubio, A. A1 Himpsel, F. J. AB The Cu(111) surface state has been mapped for vicinal surfaces with variable step densities by angle-resolved photoemission. Using tunable synchrotron radiation to vary the Ic dependence perpendicular to the surface, as well as the k(\\) dependence, we find a switch between two qualitatively different regimes at a miscut of 7 degrees (17 Angstrom terrace width). For larger miscut angles the step modulation of the wave function dominates, and for smaller miscut angles the terrace modulation dominates. These observations resolve an apparent inconsistency between prior photoemission and STM results. PB American Physical Society SN 0031-9007 YR 2000 FD 2000 LK https://hdl.handle.net/20.500.14352/59415 UL https://hdl.handle.net/20.500.14352/59415 LA eng NO © 2000 The American Physical Society.J. E. O. and A. Mu. are supported by the Universidad del País Vasco (UPV057.240-EA197/97 and 026/98)and the Max Planck Research Award Program. E. G. M. and A. Ma. are funded by the Spanish DGES (PB-970031) and the Comunidad de Madrid (07N/0031/1998). Experiments were performed at Hasylab within the TMR Contract ERBFMGECTP950059 and at the SRC, which is supported by the NSF under Award No. DMR-9531009. F. J. H. is funded by NSF DMR-9815416. Helpful discussions with P. M. Echenique, F. J. García de Abajo, and E. V. Chulkov are acknowledged NO Universidad del País Vasco NO Spanish DGES NO Comunidad de Madrid NO TMR Contract NO NSF NO Max Planck Research Award Program DS Docta Complutense RD 7 abr 2025