Metallic phases of a C70 single layer adsorbed on Cu(111) doped with sodium

被引:4
|
作者
Pardini, T
Cepek, C
Larciprete, R
Sangaletti, L
Pagliara, S
Gotter, R
Floreano, L
Verdini, A
Morgante, A
Parmigiani, F
Goldoni, A
机构
[1] Sincrotrone Trieste, I-34012 Trieste, Italy
[2] INFM, I-25121 Brescia, Italy
[3] Univ Cattolica Sacro Cuore, I-25121 Brescia, Italy
[4] INFM, Lab TASC, I-34012 Trieste, Italy
[5] CNR, IMIP, I-85050 Tito, Pz, Italy
[6] Univ Trieste, Dipartimento Fis, I-34127 Trieste, Italy
关键词
alkali metals; fullerenes; photoemission (total yield); photon absorption spectroscopy;
D O I
10.1016/S0039-6028(03)00179-1
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The electronic properties of a C-70 single layer chemisorbed on Cu(111) surface, in which the charge state has been modified by Na doping, were studied via synchrotron radiation photoemission and absorption spectroscopy. A two-dimensional metallic phase is observed in the whole range of charge states investigated (from 1 up to 3 electrons/C-70). Moreover, all the results suggest that the orientation of the molecules, with the C-5v axis perpendicular to the surface, is not affected by Na doping. (C) 2003 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:892 / 897
页数:6
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