Electrical spin injection into n-GaAs channels and detection through MgO/CoFeB electrodes

Tomoaki Inokuchi, Takao Marukame, Mizue Ishikawa, Hideyuki Sugiyama, Yoshiaki Saito

Research output: Contribution to journalArticlepeer-review

25 Citations (Scopus)


Spin injection and detection between MgO tunnel barrier/CoFeB electrodes and n-GaAs channels were investigated by means of all electrical transport measurements. The magnetoresistance of the GaAs/MgO/CoFeB junctions and non-local signals through the lateral GaAs channel were detected in the same sample. The non-local signals were detected when the magnetization directions of two CoFeB electrodes differed. This correspondence between the magnetization directions and the non-local signals clearly shows that the injection and detection of the spin-polarized current are realized in the GaAs/MgO/CoFeB systems.

Original languageEnglish
Article number023006
JournalApplied Physics Express
Issue number2
Publication statusPublished - 2009 Feb 1
Externally publishedYes

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)


Dive into the research topics of 'Electrical spin injection into n-GaAs channels and detection through MgO/CoFeB electrodes'. Together they form a unique fingerprint.

Cite this