Low-energy surface phonons of decagonal and icosahedral quasicrystals by inelastic He-atom scattering

R. Sharma; J. Franke; W. Theis; P. Gille; Ph Ebert; H. Rieder

doi:10.1103/PhysRevB.68.054205

Low-energy surface phonons of decagonal and icosahedral quasicrystals by inelastic He-atom scattering

R. Sharma
, J. Franke
, W. Theis^*
, P. Gille
, Ph Ebert
, H. Rieder

^*Corresponding author for this work

Physics and Astronomy

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

Abstract

Low-energy surface phonons (Rayleigh mode) on quasicrystals were investigated by inelastic He-atom scattering. The tenfold surface of decagonal Al_71.8Ni_14.8Co_13.4 and the fivefold surface of icosahedral Al_70.5Pd₂₁Mn_8.5 are found to possess well-defined Rayleigh modes with isotropic sound velocities of about 3840 m/s and 3470 m/s, respectively. The observed sound velocities are in good agreement with calculations based on the respective bulk data. The experimental phonon dispersions exhibit quasi-Brillouin-zone centers located at strong Bragg peaks.

Original language	English
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	68
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevB.68.054205
Publication status	Published - 1 Aug 2003

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1103/PhysRevB.68.054205

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title = "Low-energy surface phonons of decagonal and icosahedral quasicrystals by inelastic He-atom scattering",

abstract = "Low-energy surface phonons (Rayleigh mode) on quasicrystals were investigated by inelastic He-atom scattering. The tenfold surface of decagonal Al71.8Ni14.8Co13.4 and the fivefold surface of icosahedral Al70.5Pd21Mn8.5 are found to possess well-defined Rayleigh modes with isotropic sound velocities of about 3840 m/s and 3470 m/s, respectively. The observed sound velocities are in good agreement with calculations based on the respective bulk data. The experimental phonon dispersions exhibit quasi-Brillouin-zone centers located at strong Bragg peaks.",

author = "R. Sharma and J. Franke and W. Theis and P. Gille and Ph Ebert and H. Rieder",

year = "2003",

month = aug,

day = "1",

doi = "10.1103/PhysRevB.68.054205",

language = "English",

volume = "68",

journal = "Physical Review B - Condensed Matter and Materials Physics",

issn = "1098-0121",

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T1 - Low-energy surface phonons of decagonal and icosahedral quasicrystals by inelastic He-atom scattering

AU - Sharma, R.

AU - Franke, J.

AU - Theis, W.

AU - Gille, P.

AU - Ebert, Ph

AU - Rieder, H.

PY - 2003/8/1

Y1 - 2003/8/1

N2 - Low-energy surface phonons (Rayleigh mode) on quasicrystals were investigated by inelastic He-atom scattering. The tenfold surface of decagonal Al71.8Ni14.8Co13.4 and the fivefold surface of icosahedral Al70.5Pd21Mn8.5 are found to possess well-defined Rayleigh modes with isotropic sound velocities of about 3840 m/s and 3470 m/s, respectively. The observed sound velocities are in good agreement with calculations based on the respective bulk data. The experimental phonon dispersions exhibit quasi-Brillouin-zone centers located at strong Bragg peaks.

AB - Low-energy surface phonons (Rayleigh mode) on quasicrystals were investigated by inelastic He-atom scattering. The tenfold surface of decagonal Al71.8Ni14.8Co13.4 and the fivefold surface of icosahedral Al70.5Pd21Mn8.5 are found to possess well-defined Rayleigh modes with isotropic sound velocities of about 3840 m/s and 3470 m/s, respectively. The observed sound velocities are in good agreement with calculations based on the respective bulk data. The experimental phonon dispersions exhibit quasi-Brillouin-zone centers located at strong Bragg peaks.

UR - https://www.scopus.com/pages/publications/0141649344

U2 - 10.1103/PhysRevB.68.054205

DO - 10.1103/PhysRevB.68.054205

M3 - Article

AN - SCOPUS:0141649344

SN - 1098-0121

VL - 68

JO - Physical Review B - Condensed Matter and Materials Physics

JF - Physical Review B - Condensed Matter and Materials Physics

IS - 5

ER -

Low-energy surface phonons of decagonal and icosahedral quasicrystals by inelastic He-atom scattering

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