Time-dependent universal conductance fluctuations in IrO2 nanowires.
作者： Yong-Han Lin , Lu-Yao Wang , Juhn-Jong Lin
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摘要: Single-crystalline iridium dioxide nanowires show the time-dependent universal conductance fluctuations (TUCFs) at cryogenic temperatures. The persist up to temperature T as high nearly 10 K. root-mean-square TUCF magnitudes increase with decreasing T, reaching approximately 0.1 e2 / h 1.7 We ascribe these originating from conduction electrons scattering upon mobile defects (moving centers). Our measured characteristics are satisfactorily explained in terms of existing theory its three-dimensional form. extracted electron dephasing length Lφ(1.7 K) ≃90 nm is smaller than diameter (≈ 180 nm) our nanowires.
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