Investigation of the Structural and Dynamical Properties of the (001) Surface of LiCu2O2

Details Investigation of the Structural and Dynamical Properties of the (001) Surface of LiCu2O2 Investigation of the Structural and Dynamical Properties of the (001) Surface of LiCu2O2

2009-10-03

arxiv.org/abs/0910.0561v1

Surf. Sci. 604 (2010) 692-700

Physics

Condensed Matter

Strongly Correlated Electrons

10 pages, 9 figures

Scientific paper

10.1016/j.susc.2010.01.017

We report on studies of the structure and dynamics of the (001)surface of single crystal LiCu2O2, investigated by He beam scattering at room temperature, and with lattice dynamical models. The best fit surface corrugation to measured diffraction patterns shows that the surface termination is exclusively a Li+1Cu+2O-2 plane. Lattice dynamics fits to inelastic He scattering spectra reveal the presence of two low-lying surface phonon modes, identified with the motion of Cu+2, Li+1 surface ions normal to the surface.

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