Magnetic Spin Correlations in the One-dimensional Frustrated Spin-chain System Ca₃Co₂O₆

Abstract

In this work we present a combination of zero-field and high transverse-field muon spin rotation/relaxation (µ + SR) measurements. The current µ + SR Knight-shift measurements clearly shows that Ca 3 Co 2 O 6 display strong spin correlations even at room-temperature. Further, several anomalies in the temperature dependent data are proposed to be connected to the onset of a quasi-onedimensional (Q1D) ferrimagnetic order. Further, we suggest that in the low-temperature regime, the Q1D ferrimagnetic order co-exist within a long-range antiferromagnetic phase, which has been confirmed by our recent neutron scattering studies.