Investigation of the structural and dynamical properties of the (001) surface of LiCu2O2

SURFACE SCIENCE

卷:604

Article

Yao, Yangyang¹  Zhu, Xuetao¹  Hsu, H. C.²  Chou, F. C.²  El-Batanouny, M.¹ 

[1] Boston Univ, Dept Phys, Boston, MA 02215 USA

[2] Natl Taiwan Univ, Ctr Condensed Matter Sci, Taipei 10617, Taiwan

关键词: LiCu2O2;    Helium atom scattering;    Surface structure;    Surface dynamics;    Surface phonons;   

DOI  :  10.1016/j.susc.2010.01.017

来源: Elsevier

【 摘 要 】

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 Li1+Cu2+O2- plane. Lattice dynamics fits to inelastic He scattering spectra reveal the presence of two low-lying surface phonon modes, identified with the motion of Cu2+, Li1+ surface ions normal to the surface. (C) 2010 Elsevier B.V. All rights reserved.

【 授权许可】

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