High-Efficiency Long-Spin-Coherence Electrical Spin Injection in CoFe/InGaAs Two-Dimensional Electron Gas Lateral Spin-Valve Devices

• Hidaka, Shiro

• Akabori, Masashi

• Yamada, Syoji

抄録

Electrical spin injection experiments are performed at 1.5 K in a new hybrid structure, In_<0.75>Ga_<0.25>As two-dimensional electron gases (2DEGs) with lateral Co_<0.8>Fe_<0.2> electrodes. From the electrode spacing (≤ ∼9 µm) dependence of the spin-valve signals in non-local regime, we obtained very promising results such as longer spin diffusion length L_s of ∼5.1 µm and higher spin polarization η of ∼5.7% than those in former reports. They are mainly attained by the suppression of the D'yakonov–Perel' spin relaxation process due to the tuned spin–orbit (SO) interactions.

identifier:https://dspace.jaist.ac.jp/dspace/handle/10119/11449

収録刊行物

• Applied Physics Express

  Applied Physics Express 5 (11), 113001-1-113001-3, 2012-10-12

  The Japan Society of Applied Physics

キーワード

• General Physics and Astronomy
• General Engineering

詳細情報

• CRID: 1050564287491815808
• NII論文ID: 10031126453
• NII論文ID: 210000015754
• NII書誌ID: AA12295133
• ISSN: 18820778
• ISSN: 18820786
• ISSN: http://id.crossref.org/issn/18820786
• DOI: 10.1143/apex.5.113001
• NDL書誌ID: 024103147
• Web Site: http://hdl.handle.net/10119/11449
• Web Site: http://id.ndl.go.jp/bib/024103147
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I024103147
• Web Site: http://stacks.iop.org/1882-0786/5/i=11/a=113001/pdf
• 本文言語コード: en
• 資料種別: journal article
• データソース種別:
  • IRDB
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN