CONDUCTANCE QUANTIZATION IN FERROMAGNETIC CO NANOWIRES
Journal Title: Metrology and Measurement Systems - Year 2006, Vol 13, Issue 2
Abstract
Room temperature electronic transport properties of ferromagnetic quantum wires have not been yet fully understood, and the role of electronic structure of magnetic atoms in the conductance quantization is still under discussion. We present experimental results on conductance quantization in point contacts between ferromagnetic (Co) or nonmagnetic (Au) wires and semiconductor (Ge) samples. The main features of the conductance histograms are consistent with the conductance quantization in the units of quantum conductance G0 for the nonmagnetic wires and nG0 for the ferromagnetic Co nanowires. Such behavior of the conductance of ferromagnetic wires is a consequence of the complex electronic structure of magnetic 3d transition-metal atoms. A description of the quantization phenomena is presented in terms of the Landauer formalism.
Authors and Affiliations
B. SUSŁA, M. WAWRZYNIAK, J. BARNAŚ, W. NAWROCKI
Keywords
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