Nature of the Low-Temperature3×3Surface Phase of Pb/Ge(111) | Zendy

A. Mascaraque | Zendy; J. Ávila | Zendy; J. Álvarez | Zendy; M. C. Asensio | Zendy; S. Ferrer | Zendy; E. G. Michel | Zendy

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Nature of the Low-Temperature3×3Surface Phase of Pb/Ge(111)

Author(s) -

A. Mascaraque,

J. Ávila,

J. Álvarez,

M. C. Asensio,

S. Ferrer,

E. G. Michel

Publication year - 1999

Publication title -

physical review letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.688

H-Index - 673

eISSN - 1079-7114

pISSN - 0031-9007

DOI - 10.1103/physrevlett.82.2524

Subject(s) - materials science , germanium , phase (matter) , physics , silicon , optoelectronics , quantum mechanics

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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