Full expressions for finite frequency spin, charge conductivity, and spin susceptibility in Rashba- and Luttinger-type systems are given. Whereas in the Rashba Hamiltonian the spin conductivity has the same frequency dependence as the dielectric polarizability [E. I. Rashba, cond-mat/0404723] and magnetic susceptibility [S. Erlingsson et al., cond-mat/0406531; O. Dimitrova, cond-mat/0407612], the Luttinger case is different. Moreover, for a generalized Rashba-type coupling the three quantities also exhibit different frequency dependencies.
|Original language||English (US)|
|Journal||Physical Review B - Condensed Matter and Materials Physics|
|State||Published - Feb 2005|
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics