Abstract
We report measurement of low frequency resistance noise spectroscopy in a single strand of a nanowire (NW) (diameter ≈ 45 nm) of a complex oxide manganite La0.5Sr0.5MnO3, that showed ferromagnetic transition (TC ≈ 315 K), an antiferromagnetic transition (TN ≈ 210 K) and a phase-separated region below TN. We demonstrated that noise spectroscopy in a single NW can cleanly detect the magnetic transitions including the phase-coexistence that may not be possible to do by magnetic measurements. The normalized noise in the single NW is an order less than that reported in ultralow-noise Si Junction Field Effect Transistor.
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