Title :
Efficient Electrical Electron Spin Injection from Ferromagnetic Metals in Nanostructures
Author :
Beletskii, N.N. ; Ganapolskii, E.M. ; Yakovenko, V.M.
Author_Institution :
Usikov Inst. of Radiophys. & Electron., Nat. Acad. of Sci. of Ukraine, Kharkov
Abstract :
A spin-polarized electron transport in a double-barrier tunneling nanostructure which contains CoFe/MgO spin injector has been investigated. The electron spin polarization ratio was calculated in the framework of the two-band model of free electrons in ferromagnetic metal contact. The influence of the bias voltage and tunnel barrier height on the spin polarization ratio of the electron current as well as the optimal bias voltage and the nanostructure parameters, which ensures the efficient electrical electron spin injection into nanostructures, were also determined.
Keywords :
cobalt alloys; ferromagnetic materials; iron alloys; magnesium compounds; nanostructured materials; spin polarised transport; tunnelling; CoFe-MgO; double-barrier tunneling nanostructure; electrical electron spin injection; electron spin polarization; ferromagnetic metal contact; ferromagnetic metals; nanostructures; spin-polarized electron transport; Contacts; Electrodes; Electron emission; Magnetoelectronics; Nanostructures; Polarization; Quantum dots; Spin polarized transport; Temperature; Voltage;
Conference_Titel :
Physics and Engineering of Microwaves, Millimeter and Submillimeter Waves and Workshop on Terahertz Technologies, 2007. MSMW '07. The Sixth International Kharkov Symposium on
Conference_Location :
Kharkov
Print_ISBN :
1-4244-1237-4
DOI :
10.1109/MSMW.2007.4294748
