Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Correlations in optical phonon spectra of complex solids.
AU - Fagas, G.
AU - Falko, V. F.
AU - Lambert, C. J.
AU - Gefen, Y.
PY - 2000
Y1 - 2000
N2 - Spectral correlations in the optical phonon spectrum of a solid with a complex unit cell are analyzed using the Wigner-Dyson statistical approach. Despite the fact that all force constants are real, we find that the statistics are predominantly of the GUE type depending on the location within the Brillouin zone of a crystal and the unit cell symmetry. Analytic and numerical results for the crossover from GOE to GUE statistics are presented.
AB - Spectral correlations in the optical phonon spectrum of a solid with a complex unit cell are analyzed using the Wigner-Dyson statistical approach. Despite the fact that all force constants are real, we find that the statistics are predominantly of the GUE type depending on the location within the Brillouin zone of a crystal and the unit cell symmetry. Analytic and numerical results for the crossover from GOE to GUE statistics are presented.
U2 - 10.1103/PhysRevB.61.9851
DO - 10.1103/PhysRevB.61.9851
M3 - Journal article
VL - 61
SP - 9851
EP - 9854
JO - Physical review B
JF - Physical review B
SN - 1098-0121
ER -