Author
Listed:
- H. Ueba
(Department of Electronics, Toyama University, Gofuku, Toyama, 930-8555, Japan)
Abstract
Recent progress in the study of motions and reactions of single adsorbed molecules on metal surfaces induced by inelastic tunneling electrons with a scanning tunneling microscope (STM) is given an overview, with the focus on our current theoretical understanding of the elementary processes behind these phenomena. The selected topics include rotation and dissociation ofO2onPt(111), rotation of aC2H(D)2onCu(100), lateral hopping ofCOonPd(110), lateral translation and desorption ofNH3onCu(100), and controlled manipulation of chemical transformation as well as bimolecular reaction of coadsorbed species on metal surfaces. Brief descriptions are presented of how an adsorbate to overcome the potential barrier for motion and reaction by incoherent stepwise and coherent single multistep climbing of the vibrational ladders in the potential well along the reaction coordinate, and indirect excitation of the reaction coordinate mode via anharmonic coupling to the vibrational mode excited by tunneling current. Elementary processes of the mode-selective control of different motions are also discussed in conjunction with a recent experimental result of lateral hopping and desorption of a singleNH3molecule onCu(100). Although still at a premature stage, these novel phenomena open a new world of "nano-surface-science," in which the manipulation and reaction of single adsorbates, and synthesis of a new molecular system are realized by a selective excitation of the relevant vibrational mode by tunneling electrons with an STM.
Suggested Citation
H. Ueba, 2003.
"Motions and Reactions of Single Adsorbed Molecules Induced by Vibrational Excitation with STM,"
Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 10(05), pages 771-796.
Handle:
RePEc:wsi:srlxxx:v:10:y:2003:i:05:n:s0218625x03005578
DOI: 10.1142/S0218625X03005578
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