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2011 | 119 | 5 | 726-728
Article title

Studies of Magnetoresistance in GaAs:Te Crystals with Structural Disorder at Doping Limit

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EN
Abstracts
EN
Transverse magnetoresistance was studied in monocrystalline GaAs:Te doped above the equilibrium doping limit and annealed to partially deactivate donor impurities. It is shown that in a sample with partial deactivation of Te impurities, which exhibits structural fluctuations in microscale, both strong positive and some negative magnetoresistances arise, which are difficult to understand within the relaxation time approximation in degenerated homogeneous semiconductor. It is discussed that a consideration of the role of spatial fluctuations (in carrier concentration, conductivity, etc.), e.g. as proposed by Herring, allows for an understanding of positive component of magnetoresistance observed in the sample with a distinct microscopic structural disorder. With the aim to better understand the transport in GaAs:Te, a model material doped above the doping limit, we discuss both positive and negative components of measured magnetoresistance.
Keywords
EN
Contributors
author
  • Institute of Experimental Physics, Faculty of Physics, University of Warsaw, Hoża 69, 00-681 Warsaw, Poland
  • Institute of Experimental Physics, Faculty of Physics, University of Warsaw, Hoża 69, 00-681 Warsaw, Poland
author
  • Institute of Experimental Physics, Faculty of Physics, University of Warsaw, Hoża 69, 00-681 Warsaw, Poland
References
  • 1. C.S. Fuller, K. Wolfstirn, J. Appl. Phys. 34, 2287 (1963)
  • 2. J.K. Kung, W.G. Spitzer, J. Appl. Phys. 44, 912 (1973)
  • 3. J.K. Kung, W.G. Spitzer, J. Appl. Phys. 45, 4477 (1974)
  • 4. M.G. Milvidskii, W.B. Osvenskii, V.I. Fistul, E.M. Omeljanovskii, S.P. Grishina, Fiz. Tekh. Poluprovodn. 1, 969 (1967)
  • 5. T. Słupiński, Ph.D. Thesis, University of Warsaw, Warsaw 1999
  • 6. T. Słupiński, E. Zielińska-Rohozińska, in: Mater. Res. Soc. Symp. Proc., Eds. A. Mascarenhas, D. Follstaedt, T. Suzuki, B. Joyce, Materials Research Society, Warrendale, Pennsylvania 2000, p. 261
  • 7. K. Seeger, Semiconductor Physics. An Introduction, 7 ed., Springer-Verlag, Berlin 1999
  • 8. C. Herring, J. Appl. Phys. 31, 1939 (1960)
  • 9. D.G. Polyakov, F. Evers, A.D. Mirlin, P. Wölfle, Phys. Rev. B 64, 205306 (2001)
  • 10. A.D. Mirlin, D.G. Polyakov, F. Evers, P. Wölfle, Phys. Rev. Lett. 87, 126805 (2001)
  • 11. A.P. Dmitriev, V.Yu. Kachorovskii, Semiconductors 42, 934 (2008) [Fiz. Tekh. Poluprovodn. 42, 950 (2008)]
  • 12. A. Kawabata, Solid State Commun. 34, 431 (1980)
Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv119n548kz
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