Magnetic order and transitions in the spin-web compound Cu3TeO6

TL;DR

This study investigates the magnetic properties of Cu3TeO6 using muon-spin relaxation, revealing a clear 3D magnetic order below 61.7 K and clarifying the nature of spin correlations around the transition.

Contribution

First local magnetic property investigation of Cu3TeO6 using muon-spin relaxation, establishing the presence of long-range magnetic order and clarifying spin correlation behavior.

Findings

Long-range 3D magnetic order below 61.7 K

Sharp magnetic transition observed at TN

No evidence of static or dynamic spin correlations above TN

Abstract

The spin-web compound Cu3TeO6, belongs to an intriguing group of materials where magnetism is governed by 3d9 copper Cu2+ ions. This compound has been sparsely experimentally studied and we here present the first investigation of its local magnetic properties using muon-spin relaxation/rotation ({\mu}+SR). Our results show a clear long-range 3D magnetic order below TN as indicated by clear zero-field (ZF) muon-precessions. At TN = 61.7 K a very sharp transition is observed in the weak transverse-field (wTF) as well as ZF data. Contrary to suggestions by susceptibility measurements and inelastic neutron scattering, we find no evidence for either static or dynamic (on the time-scale of {\mu}+SR) spin-correlations above TN.