Title :
Manifestation of pure spin currents induced by spin dependent electron-phonon interaction
Author :
Ganichev, S.D. ; Danilov, S.N. ; Giglberger, S. ; Weiss, D. ; Prettl, W. ; Bel´kov, V.V. ; Ivchenko, E.L. ; Tarasenko, S.A. ; Jantsch, W. ; Schaffler, F. ; Gruber, D.
Author_Institution :
Fac. of Phys., Regensburg Univ., Germany
Abstract :
It is shown that energy relaxation of infrared radiation heated electron gas results in equal and oppositely directed currents in spin-up and spin-down subbands caused by spin dependent electron-phonon interaction. In experiment on SiGe structures a pure spin current was converted into electric current by application of a magnetic field distorting the balance between the two partial currents.
Keywords :
Ge-Si alloys; electron relaxation time; electron spin polarisation; electron-phonon interactions; spin Hall effect; SiGe; energy relaxation; heated electron gas; infrared radiation; partial currents; pure spin currents; spin dependent electron-phonon interaction; spin-down subbands; spin-up subbands; Charge carrier processes; Current; Electrons; Germanium silicon alloys; Hall effect; Infrared heating; Magnetoelectronics; Microscopy; Paramagnetic resonance; Silicon germanium;
Conference_Titel :
Infrared and Millimeter Waves and 13th International Conference on Terahertz Electronics, 2005. IRMMW-THz 2005. The Joint 30th International Conference on
Print_ISBN :
0-7803-9348-1
DOI :
10.1109/ICIMW.2005.1572488
