Electronic and vibrational properties of an Al-Cu-Ru icosahedral quasicrystal deduced from heat capacities

A. Inaba; S. Ishida; T. Matsuo; K. Shibata; A. P. Tsai

doi:10.1080/095008396180128

Electronic and vibrational properties of an Al-Cu-Ru icosahedral quasicrystal deduced from heat capacities

A. Inaba, S. Ishida, T. Matsuo, K. Shibata, A. P. Tsai

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

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Abstract

Heat capacity measurements have been made in the temperature range 1-310 K for a phasonless perfect quasicrystal Al₆₅Cu₂₀Ru₁₅an Al₆₅Cu₂₀Ru₁₅quasicrystal with phason disorder, and a crystal approximant Al70Cu20Rui0. The electronic heat capacity of the perfect quasicrystal was found to be essentially zero. The existence of some excitation associated with an energy of about 1.6meV is proposed. The vibrational properties of the quasicrystal are distinctly different from those of the crystal approximant in the region T < Q_D/10, indicating that the densities of states are significantly different at the corresponding energies.

Original language	English
Pages (from-to)	381-388
Number of pages	8
Journal	Philosophical Magazine Letters
Volume	74
Issue number	5
DOIs	https://doi.org/10.1080/095008396180128
Publication status	Published - 1996 Nov

ASJC Scopus subject areas

Condensed Matter Physics

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abstract = "Heat capacity measurements have been made in the temperature range 1-310 K for a phasonless perfect quasicrystal Al65Cu20Ru15an Al65Cu20Ru15quasicrystal with phason disorder, and a crystal approximant Al70Cu20Rui0. The electronic heat capacity of the perfect quasicrystal was found to be essentially zero. The existence of some excitation associated with an energy of about 1.6meV is proposed. The vibrational properties of the quasicrystal are distinctly different from those of the crystal approximant in the region T < QD/10, indicating that the densities of states are significantly different at the corresponding energies.",

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AU - Inaba, A.

AU - Ishida, S.

AU - Matsuo, T.

AU - Shibata, K.

AU - Tsai, A. P.

PY - 1996/11

Y1 - 1996/11

N2 - Heat capacity measurements have been made in the temperature range 1-310 K for a phasonless perfect quasicrystal Al65Cu20Ru15an Al65Cu20Ru15quasicrystal with phason disorder, and a crystal approximant Al70Cu20Rui0. The electronic heat capacity of the perfect quasicrystal was found to be essentially zero. The existence of some excitation associated with an energy of about 1.6meV is proposed. The vibrational properties of the quasicrystal are distinctly different from those of the crystal approximant in the region T < QD/10, indicating that the densities of states are significantly different at the corresponding energies.

AB - Heat capacity measurements have been made in the temperature range 1-310 K for a phasonless perfect quasicrystal Al65Cu20Ru15an Al65Cu20Ru15quasicrystal with phason disorder, and a crystal approximant Al70Cu20Rui0. The electronic heat capacity of the perfect quasicrystal was found to be essentially zero. The existence of some excitation associated with an energy of about 1.6meV is proposed. The vibrational properties of the quasicrystal are distinctly different from those of the crystal approximant in the region T < QD/10, indicating that the densities of states are significantly different at the corresponding energies.

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Electronic and vibrational properties of an Al-Cu-Ru icosahedral quasicrystal deduced from heat capacities

Abstract

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