Dispersion curves of the surface phonons of the TiC(100) surface

C. Oshima; R. Souda; M. Aono; S. Otani; Y. Ishizawa

doi:10.1016/0039-6028(86)90328-6

Dispersion curves of the surface phonons of the TiC(100) surface

C. Oshima^*, R. Souda, M. Aono, S. Otani, Y. Ishizawa

^*Corresponding author for this work

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

2 Citations (Scopus)

Abstract

The dispersion curves of the surface phonons of the TiC(100) surface have been determined over the entire Brillouin zone along the Γ-M direction by using electron energy loss spectroscopy. We have observed an acoustical branch (Rayleigh mode) and three optical branches (Lucas and Wallis modes and a new mode), which are assigned from a simple calculation based on the nearest-neighbour force constant model. The stiffening of the stretching force constant between the topmost layer and the second layer results in a new mode, which explains qualitatively the new observed optical mode.

Original language	English
Pages (from-to)	519-527
Number of pages	9
Journal	Surface Science
Volume	178
Issue number	1-3
DOIs	https://doi.org/10.1016/0039-6028(86)90328-6
Publication status	Published - 1986 Dec 3

ASJC Scopus subject areas

Physical and Theoretical Chemistry
Condensed Matter Physics
Surfaces and Interfaces

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10.1016/0039-6028(86)90328-6

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abstract = "The dispersion curves of the surface phonons of the TiC(100) surface have been determined over the entire Brillouin zone along the Γ-M direction by using electron energy loss spectroscopy. We have observed an acoustical branch (Rayleigh mode) and three optical branches (Lucas and Wallis modes and a new mode), which are assigned from a simple calculation based on the nearest-neighbour force constant model. The stiffening of the stretching force constant between the topmost layer and the second layer results in a new mode, which explains qualitatively the new observed optical mode.",

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T1 - Dispersion curves of the surface phonons of the TiC(100) surface

AU - Oshima, C.

AU - Souda, R.

AU - Aono, M.

AU - Otani, S.

AU - Ishizawa, Y.

PY - 1986/12/3

Y1 - 1986/12/3

N2 - The dispersion curves of the surface phonons of the TiC(100) surface have been determined over the entire Brillouin zone along the Γ-M direction by using electron energy loss spectroscopy. We have observed an acoustical branch (Rayleigh mode) and three optical branches (Lucas and Wallis modes and a new mode), which are assigned from a simple calculation based on the nearest-neighbour force constant model. The stiffening of the stretching force constant between the topmost layer and the second layer results in a new mode, which explains qualitatively the new observed optical mode.

AB - The dispersion curves of the surface phonons of the TiC(100) surface have been determined over the entire Brillouin zone along the Γ-M direction by using electron energy loss spectroscopy. We have observed an acoustical branch (Rayleigh mode) and three optical branches (Lucas and Wallis modes and a new mode), which are assigned from a simple calculation based on the nearest-neighbour force constant model. The stiffening of the stretching force constant between the topmost layer and the second layer results in a new mode, which explains qualitatively the new observed optical mode.

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JO - Surface Science

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ER -

Dispersion curves of the surface phonons of the TiC(100) surface

Abstract

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