TY  - JOUR
AU  - Perroni, C. A.
AU  - Bercioux, D.
AU  - Marigliano Ramaglia, V.
AU  - Cataudella, V.
TI  - Rashba quantum wire: exact solution and ballistic transport
JO  - Journal of physics / Condensed matter
VL  - 19
SN  - 0953-8984
CY  - Bristol
PB  - IOP Publ.
M1  - PreJuSER-59397
SP  - 186227
PY  - 2007
N1  - Record converted from VDB: 12.11.2012
AB  - The 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.
KW  - J (WoSType)
LB  - PUB:(DE-HGF)16
C6  - pmid:21691008
UR  - <Go to ISI:>//WOS:000246556500033
DO  - DOI:10.1088/0953-8984/19/18/186227
UR  - https://juser.fz-juelich.de/record/59397
ER  -