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Tunneling dynamics of a surface hydroxyl group

Briefing of a recent publication: "Tunneling dynamics of a hydroxyl group adsorbed on Cu(110)", PRB 79, 035423 (2009).

Structure and dynamics of a hydroxyl (OH) group on the Cu(110) surface is reported in this paper. The inclined OH axis of the hydroxyl group switches back and forth between the two equivalent orientations. Additionally, hydroxyl group is a basic system containing hydrogen. Hydrogen is the simplest element and shows quantum effects due to its low mass. Quantum tunneling of hydrogen atoms (or protons) plays crucial roles in diverse chemical, physical, and biological process. In this work, we investigated the dynamics of hydroxyl spices, including tunneling effect of hydrogen bound by double minimum potential well, as shown in the right figure.


Water: monomers and dimers

Briefing of a recent publication:

"Water mononer and dimer on Cu(110) studied using a scanning tunneling microscope"
T. Kumagai, M. Kaizu, H. Okuyama, S. Hatta, T. Aruga, I. Hamada, and Y. Morikawa, e-J. Surf. Sci. Nanotech. 6, 296-300 (2008).