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

A STUDY ON THE FEASIBILITY AND EFFECTIVENESS OF DIGITAL FILTER APPLICATION FOR HARMONIC AND INTERHARMONIC MEASUREMENT IN COMPLIANCE WITH IEC 61000-4-7<br />

Large scale monitoring of power quality in electrical power plants is nowadays a pressing need due to the liberalization of the electrical market in many countries and the deeper interconnections of electrical networks....

RANKINGS AS ORDINAL SCALE MEASUREMENT RESULTS

Rankings (or preference relations, or weak orders) are sometimes considered to be non-empirical, non-objective, low-informative and, in principle, are not worthy to be titled measurements. A purpose of the paper is to de...

AN OPTIMAL DEGREE OF COMPLEXITY OF A SIMPLIFIED MODEL

A simplified model can be created using one of the already known mathematical methods (series expansion of a function, truncating continued fraction expansion [1] and so forth) if the analytic form of the full model is k...

MEASUREMENTS OF UNSTEADY FLOW PARAMETERS IN PIPE-RECEIVER AND PIPE-TURBOCHARGER SYSTEMS

In the paper, the characteristic features of an unsteady flow in two systems: a high-volume pipe-receiver and a pipe-turbine are described. The tests were made under the conditions of a pulsating pipe supply in the range...

RECTIFICATION

Unfortunately, in the issue number 1/2006 Metrology and Measurement Systems in the article: Zygmunt L. Warsza “Two-parameter measurements and signal conditioning in double – current supply four – terminal resistance circ...

Download PDF file
  • EP ID EP113126
  • DOI -
  • Views 76
  • 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