Journal of Materials Science

, Volume 45, Issue 1, pp 124–129 | Cite as

Direct detection of electron spins and doping effects in spin-polarized electron transport in gallium arsenide

  • M. Idrish MiahEmail author


The spin Hall effect allows the direct detection of spins in semiconductors. In this study, electron spins in n-doped gallium arsenide are detected and the effects of n-type doping in gallium arsenide under drift are studied. It is found that the effects in the spin-polarized electron transport increase with increasing doping density in the moderate range, indicating that the introduction of n-type dopants increases the electron-spin lifetimes in gallium arsenide. However, the transport drifting by a high field shows no effects because of destroying the electron-spin polarization in n-doped gallium arsenide. The results are discussed in details.


Quantum Well Spin Relaxation Gallium Arsenide Spin Precession Doping Density 


  1. 1.
    Ziese M, Thornton MJ (eds) (2001) In: Spin electronics, vol 569. Springer, HeidelbergGoogle Scholar
  2. 2.
    Das Sarma S (2001) Am Sci 89:516CrossRefGoogle Scholar
  3. 3.
    Awschalom DD, Loss D, Samarth N (eds) (2002) In: Semiconductor spintronics and quantum computation. Springer, BerlinGoogle Scholar
  4. 4.
    Dyakonov MI, Khaetskii AV (2008) In: Dyakonov MI (ed) Spin Hall effect (spin physics in semiconductors). Springer, BerlinGoogle Scholar
  5. 5.
    Ramsteiner, Hao HY, Kawaharazuka A, Zhu HJ, Kästner M, Hey R, Däweritz L, Grahn HT, Ploog KH (2002) Phys Rev B 66:081304CrossRefGoogle Scholar
  6. 6.
    Hammar PR, Bennet BR, Yang MJ, Johnson M (1999) Phys Rev Lett 84:203CrossRefGoogle Scholar
  7. 7.
    Schmidt G, Ferrand D, Molenkamp LW, Filip AT, van Wees BJ (2000) Phys Rev B 62:R4790CrossRefGoogle Scholar
  8. 8.
    Pierce DT, Meier F (1976) Phys Rev B 13:5484CrossRefGoogle Scholar
  9. 9.
    Kato Y, Myers RC, Gossard AC, Awschalom DD (2004) Science 306:1910CrossRefGoogle Scholar
  10. 10.
    Hirsch JE (1999) Phys Rev Lett 83:1834CrossRefGoogle Scholar
  11. 11.
    Miah MI (2006) Mater Lett 60:2863CrossRefGoogle Scholar
  12. 12.
    Smit J (1951) Physica 17:612CrossRefGoogle Scholar
  13. 13.
    D’yakonov MI, Perel VI (1971) Sov Phys JETP 33:1053Google Scholar
  14. 14.
    Miah MI (2009) J Phys D Appl Phys 42:045503CrossRefGoogle Scholar
  15. 15.
    Northrup JE, Zhang SB (1993) Phys Rev B 47:6791CrossRefGoogle Scholar
  16. 16.
    Chazalviel J-N (1975) Phys Rev B 11:3918CrossRefGoogle Scholar
  17. 17.
    Engel H-A, Halperin BI, Rashba EI (2005) Phys Rev Lett 95:166605CrossRefGoogle Scholar
  18. 18.
    Tse W-K, Das Sarma S (2006) Phys Rev Lett 96:056601CrossRefGoogle Scholar
  19. 19.
    Sanada H, Arata I, Ohno Y, Ohtani K, Chen Z, Kayanuma K, Oka Y, Matsukura F, Ohno H (2002) In: The second international conference on physics and application of spin related phenomena in semiconductors, Würzburg, GermanyGoogle Scholar
  20. 20.
    Pikus GE, Titkov AN (1984) In: Meier F, Zakharchenya BP (eds) Optical orientation, modern problems in condensed matter science, vol 8. North-Holland, AmsterdamGoogle Scholar
  21. 21.
    Dresselhaus G (1955) Phys Rev 100:580CrossRefGoogle Scholar
  22. 22.
    Bychkov YA, Rashba EI (1984) J Phys C Solid State Phys 17:6039CrossRefGoogle Scholar
  23. 23.
    Adachi S (1994) GaAs and related materials: bulk semiconducting and superlattice properties. World Scientific, SingaporeGoogle Scholar
  24. 24.
    Britton RS, Grevatt T, Malinowski A, Harley RT, Perozzo P, Cameron AR, Miller A (1998) Appl Phys Lett 73:2140CrossRefGoogle Scholar
  25. 25.
    Miah MI (2008) Phys Lett A 372:6981CrossRefGoogle Scholar
  26. 26.
    Kityk IV (2003) Semicond Sci Technol 18:1001CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media, LLC 2009

Authors and Affiliations

  1. 1.Queensland Micro- and Nanotechnology CentreGriffith UniversityNathan, BrisbaneAustralia
  2. 2.School of Biomolecular and Physical SciencesGriffith UniversityNathan, BrisbaneAustralia
  3. 3.Department of PhysicsUniversity of ChittagongChittagongBangladesh

Personalised recommendations