Anomalous surface lattice dynamics of a simple hexagonal close-packed surface

R. Heid; K. P. Bohnen; T. Moritz; K. L. Kostov; D. Menzel; W. Widdra

Anomalous surface lattice dynamics of a simple hexagonal close-packed surface

R. Heid
, K. P. Bohnen
, T. Moritz
, K. L. Kostov
, D. Menzel
, W. Widdra

Chair of Experimental Physics

Kernforschungszentrum Karlsruhe
Technical University of Munich
Institute of Plant Physiology and Genetics
Max Born Institute

Research output: Contribution to journal › Article › peer-review

10 Scopus citations

Abstract

The surface lattice dynamics of Ru(001) has been investigated by a combined first-principles calculation and high-resolution electron-energy-loss spectroscopy. We find very anomalous dispersion curves of low-frequency surface modes and indications of strong softening of longitudinally polarized vibrations. They originate from large modifications of in-plane surface force constants unexpected for such a compact hexagonal surface.

Original language	English
Article number	161406
Pages (from-to)	1614061-1614064
Number of pages	4
Journal	Physical Review B-Condensed Matter
Volume	66
Issue number	16
State	Published - 15 Oct 2002

Cite this

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title = "Anomalous surface lattice dynamics of a simple hexagonal close-packed surface",

abstract = "The surface lattice dynamics of Ru(001) has been investigated by a combined first-principles calculation and high-resolution electron-energy-loss spectroscopy. We find very anomalous dispersion curves of low-frequency surface modes and indications of strong softening of longitudinally polarized vibrations. They originate from large modifications of in-plane surface force constants unexpected for such a compact hexagonal surface.",

author = "R. Heid and Bohnen, \{K. P.\} and T. Moritz and Kostov, \{K. L.\} and D. Menzel and W. Widdra",

year = "2002",

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T1 - Anomalous surface lattice dynamics of a simple hexagonal close-packed surface

AU - Heid, R.

AU - Bohnen, K. P.

AU - Moritz, T.

AU - Kostov, K. L.

AU - Menzel, D.

AU - Widdra, W.

PY - 2002/10/15

Y1 - 2002/10/15

N2 - The surface lattice dynamics of Ru(001) has been investigated by a combined first-principles calculation and high-resolution electron-energy-loss spectroscopy. We find very anomalous dispersion curves of low-frequency surface modes and indications of strong softening of longitudinally polarized vibrations. They originate from large modifications of in-plane surface force constants unexpected for such a compact hexagonal surface.

AB - The surface lattice dynamics of Ru(001) has been investigated by a combined first-principles calculation and high-resolution electron-energy-loss spectroscopy. We find very anomalous dispersion curves of low-frequency surface modes and indications of strong softening of longitudinally polarized vibrations. They originate from large modifications of in-plane surface force constants unexpected for such a compact hexagonal surface.

UR - https://www.scopus.com/pages/publications/0142020101

M3 - Article

AN - SCOPUS:0142020101

SN - 0163-1829

VL - 66

SP - 1614061

EP - 1614064

JO - Physical Review B-Condensed Matter

JF - Physical Review B-Condensed Matter

IS - 16

M1 - 161406

ER -

Anomalous surface lattice dynamics of a simple hexagonal close-packed surface

Abstract

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