Unconventional magnetic properties of the weakly ferromagnetic metal BaIrO_3

Abstract

We present experimental evidence for small-moment magnetism below the ferromagnetic transition temperature (T_c3 = 183 K) in the quasi-one-dimensional metal BaIrO_3. Further, we identify rearrangement of the local magnetic moment distribution, which leaves the bulk magnetization unchanged, at the Mott-like transition (T_c1 = 26 K). These results are only possible via muon-spin relaxation ($\mu$SR) techniques, since neutron scattering studies are hindered by the large absorption of neutrons by Ir. The low temperature characteristics of this compound, as revealed by $\mu$SR, are unconventional, and suggest that its magnetic properties are driven by changes occuring at the Fermi surface due to the formation of a charge-density wave state.

arXiv comment4 pages, 4 figures

References in corpus (4)

• Spin-polarized muons in condensed matter physics
• From Mott insulator to ferromagnetic metal: a pressure study of Ca${}_2$RuO${}_4$
• Muon Spin Relaxation Study of (La, Ca)MnO3
• High-temperature weak ferromagnetism on the verge of a metallic state: Impact of dilute Sr-doping on BaIrO3

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• Spectroscopic signature of trimer Mott insulator and charge disproportionation in BaIrO${}_3$
• Ground state tuning of the metal-insulator transition by compositional variations in BaIr1-xRuxO3(0<x<1)