Bercioux, D. and Governale, M. and Cataudella, V. and Ramaglia, V. (2004) Quantum networks in the presence of the Rashba effect and a magnetic field. Materials Science-Poland 22, p. 553.
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We use a simple formalism to calculate the conductance of any quantum network consisting of single- channel one-dimensional quantum wires in the presence of Rashba spin-orbit coupling and a coupling magnetic field. We show that the Rashba effect may give rise to an electron localization phenomenon similar to the Aharonov-Bohm effect. This localization effect can be attributed to spin precession due to the Rashba effect. We present results for linear transport through a finite-size chain connected to leads, taking also the effect of disorder into account. The effects of applying a magnetic field and Rashba spinorbit coupling are studied in two-dimensional networks, showing that their interplay can lead the system to a transition between localized and anti-localized behaviour.
|Subjects:||500 Science > 530 Physics|
|Refereed:||Yes, this version has been refereed|
|Created at the University of Regensburg:||Yes|
|Deposited On:||20 Mar 2007|
|Last Modified:||05 Aug 2009 13:30|