Regensburg 2004 – scientific programme
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HL: Halbleiterphysik
HL 44: Poster II
HL 44.8: Poster
Thursday, March 11, 2004, 16:30–19:00, Poster A
Spin-orbit interaction in quantum wires in transverse magnetic field — •S. Debald1, T. Brandes2, and B. Kramer1 — 1I. Institut für Theoretische Physik, Universität Hamburg — 2Dept. of Physics, UMIST, PO Box 88, Manchester M60 1QD, UK
The effect of spin-orbit interaction on spectral and transport properties of quasi one-dimensional electron systems in a transverse magnetic field is investigated in the ballistic regime.
Spin-orbit interaction previously has been reported to significantly change the structure of electronic subbands if the spin precession length is comparable to the width of the wire [1,2]. We extend these calculations by introducing a transverse magnetic field.
We apply exact numerical and perturbative approaches to identify different regimes dependent on the relative strength in the interplay of confinement, spin-orbit coupling and magnetic field. This interplay leads to new effects like a finite subband-dependent spin-splitting at k=0 being absent without magnetic field.
[1] A.V. Moroz and C.H.W. Barnes, Phys. Rev. B 60, 14272 (1999).
[2] M. Governale and U. Zülicke, Phys. Rev. B 66, 073311 (2002).