Oxygen doped S = 1/2 Cu delafossites: A muon spin rotation/relaxation study

P. Mendels, D. Bono, F. Bert, O. Garlea, C. Darie, P. Bordet, V. Brouet, M. H. Julien, A. D. Hillier, A. Amato

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10 Scopus citations

Abstract

We present a μSR study of oxygen-doped delafossites RCuO2+δ (δ = 0.5, 0.66; R3+ = La3+, Y3+) which present triangular based lattices of Cu2+, S = 1/2 spins. A slowing down of the spin dynamics without onset of a magnetic static freezing down to 1.6 K is found for YCuO2.5, which is believed to be an example of a Δ-chain. In contrast, YCuO2.66 and LaCuO2.66 clearly order, probably into an antiferromagnetic state which was rather unexpected.

Original languageEnglish
Pages (from-to)S799-S804
JournalJournal of Physics Condensed Matter
Volume16
Issue number11 SPEC. ISS.
DOIs
StatePublished - Mar 24 2004
Externally publishedYes

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