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000059397 084__ $$2WoS$$aPhysics, Condensed Matter
000059397 1001_ $$0P:(DE-Juel1)VDB54416$$aPerroni, C. A.$$b0$$uFZJ
000059397 245__ $$aRashba quantum wire: exact solution and ballistic transport
000059397 260__ $$aBristol$$bIOP Publ.$$c2007
000059397 300__ $$a186227
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000059397 440_0 $$03703$$aJournal of Physics: Condensed Matter$$v19$$x0953-8984
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000059397 520__ $$aThe effect of Rashba spin-orbit interaction in quantum wires with hard-wall boundaries is discussed. The exact wavefunction and eigenvalue equation are worked out, pointing out the mixing between the spin and spatial parts. The spectral properties are also studied within perturbation theory with respect to the strength of the spin-orbit interaction and diagonalization procedure. A comparison is made with the results of a simple model, the two-band model, that takes account only of the first two sub-bands of the wire. Finally, the transport properties within the ballistic regime are analytically calculated for the two-band model and through a tight-binding Green function for the entire system. Single and double interfaces separating regions with different strengths of spin-orbit interaction are analysed by injecting carriers into the first and the second sub-band. It is shown that in the case of a single interface the spin polarization in the Rashba region is different from zero, and in the case of two interfaces the spin polarization shows oscillations due to spin-selective bound states.
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000059397 7001_ $$0P:(DE-HGF)0$$aBercioux, D.$$b1
000059397 7001_ $$0P:(DE-HGF)0$$aMarigliano Ramaglia, V.$$b2
000059397 7001_ $$0P:(DE-HGF)0$$aCataudella, V.$$b3
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000059397 8567_ $$uhttp://dx.doi.org/10.1088/0953-8984/19/18/186227
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