Inhomogeneous magnetism in single crystalline Sr$_3$CuIrO$_{6+δ}$: Implications to phase-separation concepts

Details Inhomogeneous magnetism in single crystalline Sr$_3$CuIrO$_{6+δ}$: Implications to phase-separation concepts Inhomogeneous magnetism in single crystalline Sr$_3$CuIrO$_{6+δ}$: Implications to phase-separation concepts

2002-03-29

arxiv.org/abs/cond-mat/0203606v1

Physical Review Letters, vol 10 (2002) 107202

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 4 figures

Scientific paper

10.1103/PhysRevLett.88.107202

The single crystalline form of an insulator, Sr$_3$CuIrO$_{6+\delta}$, is shown to exhibit unexpectedly more than one magnetic transition (at 5 and 19 K) with spin-glass-like magnetic susceptibility behaviour. On the basis of this finding, viz., inhomogeneous magnetism in a chemically homogeneous material, we propose that the idea of "phase- separation" described for manganites [1] is more widespread in different ways. The observed experimental features enable us to make a comparison with the predictions of a recent toy model [2] on {\it magnetic} phase separation in an insulating environment.

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