Rashba effect in quantum networks
Abstract
We present a formalism to study quantum networks made up by single-channel quantum wires in the presence of Rashba spin-orbit coupling and magnetic field. In particular, linear transport through one-dimensional and two-dimensional finite-size networks is studied by means of the scattering formalism. In some particular quantum networks, the action of the magnetic field or of the Rashba spin-orbit coupling induces localization of the electron wave function. This phenomenon, which relies on both the quantum-mechanical interference and the geometry of the network, is manifested through the suppression of the conductance for specific values of the spin-orbit-coupling strength or of the magnetic field. Furthermore, the interplay of the Aharonov-Bohm phases and of the non-Abelian phases introduced by spin-orbit coupling, is discussed in a number of cases.
Cite
@article{arxiv.cond-mat/0502455,
title = {Rashba effect in quantum networks},
author = {Dario Bercioux and Michele Governale and Vittorio Cataudella and Vincenzo Marigliano Ramaglia},
journal= {arXiv preprint arXiv:cond-mat/0502455},
year = {2007}
}
Comments
8 pages and 6 figures