R. Matzdorf et A. Goldmann, HIGH-RESOLUTION PHOTOEMISSION-STUDY OF THE (M)OVER-BAR-SURFACE STATESON CU(111), Surface science, 359(1-3), 1996, pp. 77-81
We report new photoemission results on the well-known d-like ''Tamm''
surface states at the (M) over bar-points in the surface Brillouin zon
e of Cu(111). For the first time these states can be resolved at all s
ix M-points. The initial state energy at M is measured at E(i)=(-1.932
+/-0.005) eV with respect to E(F). The surface bands disperse towards
the upper d-band edge with an effective mass m/m(0)=-2.86+/-0.20 with
reference to the free-electron mass m(0).