Quantized Conductance of a Single Magnetic Atom

Details Quantized Conductance of a Single Magnetic Atom Quantized Conductance of a Single Magnetic Atom

2008-09-21

arxiv.org/abs/0809.3567v1

Physics

Condensed Matter

Materials Science

3 pages, 2 figures

Scientific paper

10.1103/PhysRevLett.102.086805

A single Co atom adsorbed on Cu(111) or on ferromagnetic Co islands is
contacted with non-magnetic W or ferromagnetic Ni tips in a scanning tunneling
microscope. When the Co atom bridges two non-magnetic electrodes conductances
of 2e^2/h are found. With two ferromagnetic electrodes a conductance of e^2/h
is observed which may indicate fully spin-polarized transport.

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