Open AccessSpin densities in parabolic quantum wires with Rashba spin‐orbit interaction
Author(s) -
Erlingsson Sigurdur I.,
Carlos Egues J.,
Loss Daniel
Publication year - 2007
Publication title -
physica status solidi c
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 46
eISSN - 1610-1642
pISSN - 1862-6351
DOI - 10.1002/pssc.200672838
Subject(s) - hamiltonian (control theory) , physics , condensed matter physics , gaussian , spin–orbit interaction , eigenvalues and eigenvectors , spin (aerodynamics) , rashba effect , wave function , quantum mechanics , quantum , spintronics , mathematics , ferromagnetism , mathematical optimization , thermodynamics
Using canonical transformations we diagonalize approximately the Hamiltonian of a gaussian wire with Rashba spin‐orbit interaction. This proceedure allows us to obtain the energy dispersion relations and the wavefunctions with good accuracy, even in systems with relatively strong Rashba coupling. With these eigenstates one can calculate the non‐equilibrium spin densities induced by applying bias voltages across the sample. We focus on the z ‐component of the spin density, which is related to the spin Hall effect. (© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)