The spin injection and detection have been investigated in a lateral spin-injection device with an FeCo/Si/FeCo junction structure. Magnetoresistance (MR) signals were found to appear at low magnetic fields in the range 4-300 K, revealing that the spin-polarized electrons are injected from the first contact and, after propagating through the bulk Si, are collected by the second contact. The inverse MR was found to be independent of temperature. Our results demonstrate spin-polarized current injection and detection in the FM/Si/FM structure at room temperature.
Bibliographical noteFunding Information:
This work was supported by KIST Vision 21 Program.
- Hybrid ferromagnetic metal/semiconductor
- Spin injection
- Spin-polarized transport
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics