Dispersion relation of surface phonon of TaC(1 0 0) studied by high resolution electron energy loss spectroscopy

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

doi:10.1016/0038-1098(86)90158-4

Dispersion relation of surface phonon of TaC(1 0 0) studied by high resolution electron energy loss spectroscopy

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

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Abstract

The dispersion curves of the surface phonon of the clean TaC(1 0 0) have been experimentally determined over the entire Brillouin zone of the Λ-M symmetry axis. This includes the first experimental observation of the Lucas mode, one of the microscopic optical surface phonon studied by using high resolution electron energy loss spectroscopy. From both the selection rule of the scattering and the vibrational energy (frequency), each mode has been assigned. Those dispersion curves strongly suggest the enhancement of the force constant of the surface atoms.

Original language	English
Pages (from-to)	283-286
Number of pages	4
Journal	Solid State Communications
Volume	57
Issue number	4
DOIs	https://doi.org/10.1016/0038-1098(86)90158-4
Publication status	Published - 1986

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ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics

Cite this

Oshima, C., Souda, R., Aono, M., Otani, S., & Ishizawa, Y. (1986). Dispersion relation of surface phonon of TaC(1 0 0) studied by high resolution electron energy loss spectroscopy. Solid State Communications, 57(4), 283-286. https://doi.org/10.1016/0038-1098(86)90158-4

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AU - Oshima, C.

AU - Souda, R.

AU - Aono, M.

AU - Otani, S.

AU - Ishizawa, Y.

PY - 1986

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AB - The dispersion curves of the surface phonon of the clean TaC(1 0 0) have been experimentally determined over the entire Brillouin zone of the Λ-M symmetry axis. This includes the first experimental observation of the Lucas mode, one of the microscopic optical surface phonon studied by using high resolution electron energy loss spectroscopy. From both the selection rule of the scattering and the vibrational energy (frequency), each mode has been assigned. Those dispersion curves strongly suggest the enhancement of the force constant of the surface atoms.

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10.1016/0038-1098(86)90158-4