Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2006-05-02
Phys. Rev. B 74, 085315 (2006)
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
Revtex, 10 pages, 2 tables, typos corrected and ref added
Scientific paper
10.1103/PhysRevB.74.085315
The traditional Kubo formula is generalized to describe the linear response with respect to non-Abelian fields. To fulfil the demand for studying spin transport, the SU(2) Kubo formulae are derived by two conventional approaches with different gauge fixings. Those two approaches are shown to be equivalent where the non-conservation of the SU(2) current plays an essential role in guaranteeing the consistency. Some concrete examples relating Spin Hall Effect are considered. The dc spin conductivity vanishes in the system with parabolic unperturbed dispersion relation. By applying a time-dependent Rashba field, the spin conductivity can be measured directly. Our formula is also applied to the high-dimensional representation for the interests of some important models, such as Luttinger model and bilayer spin Hall system.
Jin Pei-Qing
Li You-Quan
No associations
LandOfFree
Generalized Kubo formula for spin transport: A theory of linear response to non-Abelian fields does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Generalized Kubo formula for spin transport: A theory of linear response to non-Abelian fields, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Generalized Kubo formula for spin transport: A theory of linear response to non-Abelian fields will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-184217