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Combined Spectroscopy and STM Studies of (-Cu-O-) Strings on the Ag(110) Surface

Published online by Cambridge University Press:  02 July 2020

Yuji Matsumoto ,
Kazuyuki Sakamoto ,
Shozo Suto ,
K.S. An ,
TakayaFujita ,
Akito Kakizaki  and
Ken-ichi Tanaka
Yuji Matsumoto
Affiliation:
The Institute for Solid State Physics, the University of Tokyo, 7-22-1, Roppongi, Minato-ku, Tokyo, 106, Japan
Kazuyuki Sakamoto
Affiliation:
Department of physics, Graduate School of science, Tohoku UniversitySendai980-77Japan
Shozo Suto
Affiliation:
Department of physics, Graduate School of science, Tohoku UniversitySendai980-77Japan
K.S. An
Affiliation:
The Institute for Solid State Physics, the University of Tokyo, 7-22-1, Roppongi, Minato-ku, Tokyo, 106, Japan
TakayaFujita
Affiliation:
The Institute for Solid State Physics, the University of Tokyo, 7-22-1, Roppongi, Minato-ku, Tokyo, 106, Japan
Akito Kakizaki
Affiliation:
The Institute for Solid State Physics, the University of Tokyo, 7-22-1, Roppongi, Minato-ku, Tokyo, 106, Japan
Ken-ichi Tanaka
Affiliation:
The Institute for Solid State Physics, the University of Tokyo, 7-22-1, Roppongi, Minato-ku, Tokyo, 106, Japan
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Extract

It has been found that when Cu atoms are deposited on a p(2×l)-O Ag(ll0) surface, a (2×2)p2mg LEED pattern appears. The STM image has proved that zig-zag (-Cu-O-) strings grow along the [110] direction on Ag(ll0) (Fig. I)1, where a chemical reaction of (-Ag-O-) + Cu => (-Cu-O-) + Ag take place. The (-Cu-O-) strings grown on a Ag(l10) surface shows a unique reversible reaction given by an equation of (Cu)6+O2⇄ (-Cu-O-) at 570K. In this paper, we studied the bond property, the growth mechanism and electric structure of the (-Cu-O-) strings on Ag(ll0) by using XPS, HREELS and ARUPS as well as STM.

As increasing the deposition of Cu atoms on a p(2×l)-O Ag(l10) surface, the O(ls) peak in the XPS shifted from 528.2 eV to 529.9 eV(Fig. 2a). An energy loss peak at 41meV being assignable to (Ag-O) bond disappeared and a new loss peak concomitantly appeared at 35 meV in the HREELS (Fig. 2b).

Type
Atomic Structure and Mechanisms at Interfaces in Materials
Information
Microscopy and Microanalysis , Volume 3 , Issue S2: Proceedings: Microscopy & Microanalysis '97, Microscopy Society of America 55th Annual Meeting, Microbeam Analysis Society 31st Annual Meeting, Histochemical Society 48th Annual Meeting, Cleveland, Ohio, August 10-14, 1997 , August 1997 , pp. 651 - 652
Copyright
Copyright © Microscopy Society of America 1997

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References

Matsumotol, Y.et al., Surface Science Letter, 325(1995)L435, ibid., 336(1995)L762.10.1016/0039-6028(94)00838-8CrossRefGoogle Scholar
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