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

doi:10.1088/0953-8984/16/11/032

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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Abstract

We present a μSR study of oxygen-doped delafossites RCuO_2+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 YCuO_2.5, which is believed to be an example of a Δ-chain. In contrast, YCuO_2.66 and LaCuO_2.66 clearly order, probably into an antiferromagnetic state which was rather unexpected.

Original language	English
Pages (from-to)	S799-S804
Journal	Journal of Physics Condensed Matter
Volume	16
Issue number	11 SPEC. ISS.
DOIs	https://doi.org/10.1088/0953-8984/16/11/032
State	Published - Mar 24 2004
Externally published	Yes

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

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.",

author = "P. Mendels and D. Bono and F. Bert and O. Garlea and C. Darie and P. Bordet and V. Brouet and Julien, {M. H.} and Hillier, {A. D.} and A. Amato",

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TY - JOUR

T1 - Oxygen doped S = 1/2 Cu delafossites

T2 - A muon spin rotation/relaxation study

AU - Mendels, P.

AU - Bono, D.

AU - Bert, F.

AU - Garlea, O.

AU - Darie, C.

AU - Bordet, P.

AU - Brouet, V.

AU - Julien, M. H.

AU - Hillier, A. D.

AU - Amato, A.

PY - 2004/3/24

Y1 - 2004/3/24

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=12144287479&partnerID=8YFLogxK

U2 - 10.1088/0953-8984/16/11/032

DO - 10.1088/0953-8984/16/11/032

M3 - Article

AN - SCOPUS:12144287479

SN - 0953-8984

VL - 16

SP - S799-S804

JO - Journal of Physics Condensed Matter

JF - Journal of Physics Condensed Matter

IS - 11 SPEC. ISS.

ER -

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

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