Universal correlations in vibrational spectra of complex crystals

Fagas, G and Falko, Vladimir and Lambert, C J (1999) Universal correlations in vibrational spectra of complex crystals. Physica B: Condensed Matter, 263-26. pp. 136-138. ISSN 0921-4526

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Abstract

We study spectral statistics of lattice modes in a disordered crystal and in a crystal with a complex unit cell. The correlations of the eigenmode frequencies of a block of a disordered solid is found to obey the GOE Wigner-Dyson statistics. In contrast, the set of eigenfrequencies of a crystal with a complex unit cell taken at the same point Q not equal 0 in the Brillouin zone exhibit correlations specific to the GUE universality class.

Item Type:
Journal Article
Journal or Publication Title:
Physica B: Condensed Matter
Uncontrolled Keywords:
/dk/atira/pure/researchoutput/libraryofcongress/qc
Subjects:
ID Code:
57054
Deposited By:
Deposited On:
03 Sep 2012 14:04
Refereed?:
Yes
Published?:
Published
Last Modified:
01 Jan 2020 08:04