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

Related Articles

ANALYSIS OF A THREE-VOLTMETER MEASUREMENT METHOD DESIGNED FOR LOW-FREQUENCY IMPEDANCE COMPARISONS

The principle of the three voltmeter method designed for precise impedance comparison is presented. Generalization of the classical approach is proposed and analysed. Formulas for impedance parameters determination are d...

A METHOD OF IDENTIFICATION OF RTS COMPONENTS IN NOISE SIGNALS

Noise signals containing two components with different distribution of current values of the noise signal, i.e. a component with Gaussian distribution and a component with non-Gaussian distribution, were analyzed. The no...

STABILITY OF AN OPTICAL DISPLACEMENT SENSOR USING A TWO-BEAM POLARIZATION INTERFEROMETER

Optical interferometers can measure displacement with a resolution of tens of picometers. Polarization interferometers are often used in such measurements, as they exhibit much lower sensitivity to most of the perturbati...

USING NEURAL NETWORKS FOR ERROR SUPPRESSION IN NONLINEAR SYSTEMS WITH HYSTERESIS

Some shortcomings of nonlinear systems with hysteresis are relatively big errors, e.g. linearity error, hysteresis error, etc. The paper deals with possible improvements in the methods of error suppression by using neura...

FIFTY YEARS OF RESEARCH AND ACADEMIC ACTIVITIES OF PROFESSOR<br /> EUGENIUSZ RATAJCZYK

This year professor Eugeniusz Ratajczyk celebrates the 50th anniversary of his work at Warsaw University of Technology and his 75th birthday. On this occasion an Anniversary Seminar was organized at the Faculty of Mechat...

Download PDF file
  • EP ID EP113126
  • DOI -
  • Views 75
  • Downloads 0

How To Cite

B. SUSŁA, M. WAWRZYNIAK, J. BARNAŚ, W. NAWROCKI (2006). CONDUCTANCE QUANTIZATION IN FERROMAGNETIC CO NANOWIRES. Metrology and Measurement Systems, 13(2), 183-195. https://europub.co.uk/articles/-A-113126