[14p-C41-1~21] 10.4 Semiconductors, organic, optical, and quantum spintronics

▼ [14p-C41-21] Spin-related magneto-transport in semiconducting Ce doped p-type Si epitaxial films

〇Yusuke Miyata¹, Yoshimura Takeshi¹, Ashida Atsushi¹, Fujimura Norifumi¹ (1.Osaka Pref. Univ.)

Keywords:Diluted magnetic semiconductor, Silicon, Rare earth

We have been interested in the effect of Ce doping on magneto-transport characteristics in Si film because p-type Si:Ce films show ferromagnetic behaviors. Si epitaxial films including a few % Ce with the electron mobility as high as 300 cm²/Vs have been succesfully obtained by using surface re-construction and co-doping. In this talk, the spin-related negative magnetoresistance in p-type semiconducting Si:Ce films is demonstrated for the first time.