%0 Journal Article
%A Mascaraque Susunaga, Arantzazu
%A Avila, A.
%A Asensio, M. C.
%A Ferrer, S.
%A Michel, E. G
%A Álvarez Sánchez, Julio
%T Nature of the low-temperature 3 x 3 surface phase of Pb/Ge(111)
%D 1999
%@ 0031-9007
%U https://hdl.handle.net/20.500.14352/59416
%X The structure of the low-temperature 3 X 3 surface phase of Pb/Ge(111) has been determined by surface x-ray diffraction experiments. Analysis of the data reveals that the Pb layer exhibits a vertical corrugation of similar to 0.4 Angstrom, affecting also the two top Ge layers. Significant distortions are found down to the third Ge layer. This structural model supports that the 3 X 3 ground state can be best described as a cooperative distortion stabilized by a gain in electronic energy. [S0031-9007(99)08749-9].
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