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 journalArticle

10 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)381-388
Number of pages8
JournalPhilosophical Magazine Letters
Volume74
Issue number5
DOIs
Publication statusPublished - 1996 Jan 1
Externally publishedYes

ASJC Scopus subject areas

  • Condensed Matter Physics

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