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6 papers · 2 filters
Explanation of the tunneling phenomena between the edges of two lateral quantum Hall systems
Shinji Nonoyama, George Kirczenow
We identify the physics behind the results of recent measurements [W. Kang et al., Nature 403, 59 (2000)] of electron transfer between the edges of two two-dimensional electron sys…
Coherent spin valve phenomena and electrical spin injection in ferromagnetic/semiconductor/ferromagnetic junctions
F. Mireles, G. Kirczenow
Coherent quantum transport in ferromagnetic/ semiconductor/ ferromagnetic junctions is studied theoretically within the Landauer framework of ballistic transport. We show that quan…
Dynamic exchange coupling in magnetic bilayers
Bret Heinrich, Yaroslav Tserkovnyak, Georg Woltersdorf +3
A long-ranged dynamic interaction between ferromagnetic films separated by normal-metal spacers is reported, which is communicated by nonequilibrium spin currents. It is measured b…
Quantum railroads and directed localization at the juncture of quantum Hall systems
Shinji Nonoyama, George Kirczenow
The integer quantum Hall effect (QHE) and one-dimensional Anderson localization (AL) are limiting special cases of a more general phenomenon, directed localization (DL), predicted…
From classical to quantum spintronics: Theory of coherent spin injection and spin valve phenomena
Francisco Mireles, George Kirczenow
We present a theory of coherent quantum transport in ferromagnetic/ non-magnetic/ ferromagnetic heterojunctions. We predict quantum coherence to give rise to a quantum spin valve e…
Molecular Spintronics: Spin-Dependent Electron Transport in Molecular Wires
Eldon Emberly, George Kirczenow
We present a theoretical study of spin-dependent transport through molecular wires bridging ferromagnetic metal nanocontacts. We extend to magnetic systems a recently proposed mode…