[1] J.Tersoff and D.R.Hamann: Phys. Rev. Lett., 1983, 50, 1998. [2] D.Tomanek and S.Louie: Phys. Rev. B, 1988, 37, 8327. [3] M.Kuwabara, D.R.Clark and D.A.Smith: Appl. Phys. Lett.,1990, 56, 2396. [4] J.E.Buekley J.L.Wragg and H.W.White: J. Vac. Sci. Technol., 1991, 9B, 1079. [5] P.I.Oden, T.Thundat, L.A.Nagahara, S.M.Lindsay,G.B.Adams and O.F.Sankey: Surf.Sci. Lett., 1991, 254,L454. [6] V.J.Cee, D.L.Patrick and T.P.Beebe Jr.: Surf.Sci., 1995, 329,141. [7] G.P.Dai, T.S.Xie, H.M.Cheng, Y.Zhao and H.Q.Ye: Carbon,1999, 37, 994. [8] S.Amelinckx, P.Delavignette and M.Heerschap: in Chemistry and Physics of Carbon, ed. P.L.Walker, Dekker, New York,1965. [9] J.Garbarz, E.Lacaze, G.Falvre, S.Gauthier and M.Schott: Philos. Mag., 1992, 65A, 853. [10] J.Xhie, K.Sattler, M.Ge and N.Venkateswaran: Phys. Rev.,1993, 47B, 15835. |