Spin torque contribution to the a.c. spin Hall conductivity

Using the recently proposed definition of a conserved spin-current operator [J. Shi et al., Phys. Rev. Lett. 96, 076604 (2006)] we explore the frequency dependent spin Hall conductivity for a two-dimensional electron gas with Rashba and Dresselhaus spin-orbit interaction in response to an oscillating electric field. We show that the optical spectrum of the spin Hall conductivity exhibit remarkable changes when the new definition of spin current is applied. Such behavior is mainly due to a significant contribution of the spin torque term which is absent in the conventional form of the spin current. In addition, it is observed that the magnitude and direction of the dynamic spin Hall current strongly depends on the electric field frequency as with the interplay of the spin-orbit coupling strengths.Comment: 8 pages, 4 figures, pape

Relacions personals i felicitat: família, amics parella

Abstract not availabl

Ens les posam, les ulleres violetes?

Abstract not availabl

Procedimiento para la preparación de las diluciones de trabajo de los productos químicos fotográficos

PNT actividad del laboratori fotográfico: preparación químicos laboratorio. (Bellas Artes

NEE: centres ordinaris o centres específics

Abstract not availabl

Procediment per a la preparació de les dilucions de treball dels productes químics fotográfics

PNT d'activitat del laboratori fotogràfic: preparació dilucions de treball. (Belles Arts