Level repulsion and the dielectric relaxation in quadrupolar glasses

I. Kanter, H. Sompolinsky

Research output: Contribution to journalArticlepeer-review

8 Scopus citations


Dielectric relaxation in quadrupolar glasses is dominated at low temperatures by thermal activation over local anisotropy barriers produced by the quadrupolar freezing. The distribution of barrier heights V vanishes linearly as V0 at all temperatures due to the repulsion of levels of the random internal stress tensor. A further shift of V to higher values occurs as T decreases due to correlations. These results are compared with recent dielectric measurements in (KBr)0.5(KCN)0.5.

Original languageEnglish
Pages (from-to)2073-2076
Number of pages4
JournalPhysical Review B
Issue number3
StatePublished - 1986


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