Verification of electrical spin injection into InGaAs two-dimensional electron gas from CoFe electrode by four-terminal non-local geometry

Journal Article · Wed Dec 04 00:00:00 EST 2013 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4848419· OSTI ID:22261843

Hidaka, S.; Kondo, T.; Akabori, M.; Yamada, S. ^[1]

---

1. Center for Nano Materials and Technology (CNMT), Japan Advanced Institute of Science and Technology (JAIST), Asahidai, Nomi, Ishikawa 923-1292 (Japan)

We performed electrical spin injection into In{sub 0.75}Ga{sub 0.25}As two-dimensional electron gases from Co{sub 0.8}Fe{sub 0.2} electrodes by four-terminal non-local spin-valve (NLSV) measurement. We observed clear SV signals in NL resistance at 1.5 K. From the electrode spacing dependence of the signals, we estimated spin diffusion length and spin polarization to be ∼5.1 μm and ∼5.7 %, respectively. These are larger than those reported in similar systems.

• OSTI ID: 22261843
• Journal Information: AIP Conference Proceedings, Vol. 1566, Issue 1; Conference: ICPS 2012: 31. international conference on the physics of semiconductors, Zurich (Switzerland), 29 Jul - 3 Aug 2012; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
DIFFUSION LENGTH
ELECTRODES
ELECTRON GAS
GALLIUM ARSENIDES
INDIUM ARSENIDES
SPIN
SPIN ORIENTATION