Concentration-dependent effective masses of Tamm-states at the surface alloy

作者: F. Theilmann , R. Matzdorf , A. Goldmann

DOI: 10.1016/S0038-1098(97)00125-7

关键词:

摘要: Abstract We report a high-resolution photoemission study of the d-like surface state residing on Cu(1 0 0) Au alloy around M - point Brillouin zone. When going from clean to fully developed 0)c(2 × 2)Au outermost layer, inverse effective mass characterizing band dispersion with k increases by about 2.0, almost linearly concentration between zero and 50%. discuss an interpretation in terms additional electronic charge density plane.

参考文章(25)
M. Pessa, H. Asonen, R. S. Rao, R. Prasad, A. Bansil, Observation of a Tamm-type state on Cu/sub 0. 9/Al/sub 0,1/(100) surface: Disorder effects and bulk electronic structure of alloy Physical Review Letters. ,vol. 47, pp. 1223- 1226 ,(1981) , 10.1103/PHYSREVLETT.47.1223
P.L. Wincott, D.S.-L. Law, N.B. Brookes, B. Pearce, G. Thornton, A high-resolution angle-resolved photoemission study of relativistic effects on the surface electronic structure of Cu(001) Surface Science. ,vol. 178, pp. 300- 310 ,(1986) , 10.1016/0039-6028(86)90306-7
R Paniago, R Matzdorf, A Goldmann, R Courths, Temperature dependence of d-like surface states on Cu(100) and Cu3Au(100)-an angle-resolved photoemission study Journal of Physics: Condensed Matter. ,vol. 7, pp. 2095- 2103 ,(1995) , 10.1088/0953-8984/7/10/016
J.C. Hansen, M.K. Wagner, J.G. Tobin, Diffractive and spectroscopic observation of the reversible formation of a surface alloy Solid State Communications. ,vol. 72, pp. 319- 324 ,(1989) , 10.1016/0038-1098(89)90110-5
Xumou Xu, R.G. Jordan, Surface states on the (001) and (100) surfaces of equi-atomic CuAu I Solid State Communications. ,vol. 98, pp. 799- 802 ,(1996) , 10.1016/0038-1098(96)00150-0
Z.Q. Wang, Y.S. Li, C.K.C. Lok, J. Quinn, F. Jona, P.M. Marcus, Atomic and electronic structure of a surface alloy - comparison with the bulk alloy Solid State Communications. ,vol. 62, pp. 181- 185 ,(1987) , 10.1016/0038-1098(87)90187-6
R.G. Jordan, G.Y. Guo, Lilian R. Masliah, Surface states at the -point on Cu(100) Solid State Communications. ,vol. 99, pp. 73- 76 ,(1996) , 10.1016/S0038-1098(96)80052-4
J. G. Gay, J. R. Smith, F. J. Arlinghaus, Large Surface-State/Surface-Resonance Density on Copper (100) Physical Review Letters. ,vol. 42, pp. 332- 335 ,(1979) , 10.1103/PHYSREVLETT.42.332