Controlling spin in a ballistic electron interferometer with spin active interfaces

Abstract : We consider electronic current transport through a ballistic one-dimensional quantum wire connected to two ferromagnetic leads. We study the effects of the spin-dependence of interfacial phase shifts (SDIPS) acquired by electrons upon scattering at the boundaries of the wire. The SDIPS produces a spin splitting of the wire resonant energies which is tunable with the gate voltage and the angle between the ferromagnetic polarizations. This property could be used for manipulating spins. In particular, it leads to a giant magnetoresistance effect with a sign tunable with the gate voltage and the magnetic field applied to the wire.
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Article dans une revue
EPL - Europhysics Letters, European Physical Society/EDP Sciences/Società Italiana di Fisica/IOP Publishing, 2006, 74, pp.320. 〈10.1209/epl/i2006-10006-0〉
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https://hal.archives-ouvertes.fr/hal-00107412
Contributeur : Jean-Marc Berroir <>
Soumis le : mercredi 18 octobre 2006 - 15:47:19
Dernière modification le : lundi 29 mai 2017 - 14:35:11

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Audrey Cottet, Takis Kontos, Wolfgang Belzig, Christian Schönenberger, Christoph Bruder. Controlling spin in a ballistic electron interferometer with spin active interfaces. EPL - Europhysics Letters, European Physical Society/EDP Sciences/Società Italiana di Fisica/IOP Publishing, 2006, 74, pp.320. 〈10.1209/epl/i2006-10006-0〉. 〈hal-00107412〉

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