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2006 | 110 | 4 | 505-510
Article title

Fast Diffusion of Metastable Vacancies in Surface of Excited Si Crystals

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EN
Abstracts
EN
We considered the practically interesting, very fast nonlinear diffusion of metastable vacancies in the surface of Si crystal, excited by soft X-rays. Here we used experimentally defined diffusion coefficients of singly and doubly negatively charged very fast vacancies generated by soft X-rays. These high concentration (about 10^{13} cm^{-3}) metastable vacancies at room temperature can diffuse and exist in the crystal for a very long time (about 24 hours for not so fast neutral vacancies) changing electrical conductivity, the Hall mobility of carriers and generating some resonance phenomena in the lattice of Si crystal. We measured superdiffusivity of negatively charged vacancies, generated by the Auger effect in the regions of the sample, where X-rays did not acted. In the paper we modified the formerly obtained analytical solution of nonlinear diffusion equation for calculation of distribution of vacancies in two-dimensional surface.
Keywords
EN
Publisher

Year
Volume
110
Issue
4
Pages
505-510
Physical description
Dates
published
2006-10
received
2006-06-19
Contributors
  • Faculty of Natural Sciences,Šiauliai University, Višinskio 25, Šiauliai, 76351, Lithuania
author
  • Faculty of Mathematics and Informatics,Šiauliai University, Višinskio 19, Šiauliai, 76351, Lithuania
References
  • 1. A.J. Janavicius, Acta Phys. Pol. A, 93, 505, 1998
  • 2. A.J. Janavicius, J. Banys, R. Purlys, S. Balakauskas, Lith. J. Phys., 42, 337, 2002
  • 3. V.S. Vavilov, A.E. Kiv, O.R. Nijazova, Mechanism of Producing and Migration of Defects in Semiconductors, Science, Moscow 1981, p. 368
  • 4. A.J. Janavicius, R. Purlys, Z. Norgela, Acta Phys. Pol. A, 109, 159, 2006
  • 5. R. Purlys, A.J. Janavicius, A. Mekys, S. Balakauskas, J. Storasta, Lith. J. Phys., 41, 376, 2001
  • 6. A.J. Janavicius, Z. Norgela, R. Purlys, Eur. Phys. J. Appl. Phys., 29, 127, 2005
  • 7. A.J. Janavicius, Science and Technique, No. 12, J. Lith. Acad. Eng. Union, 2005, p. 19 (in Lithuanian)
  • 8. J.A. Van Vechten, Phys. Rev. B, 10, 1482, 1974
  • 9. C. Kittel, Elementary Statistical Physics, Wiley, Inc., London, Chapman& Hall, Ltd., New York 1958, p. 278
  • 10. A.J. Janavicius, V. Stukaite, D.J. Zanevicius, Electron Techn. Ser. 2: Semiconductor Dev., 160, 27, 1983 (in Russian)
  • 11. A.J. Janavicius, Phys. Lett. A, 224, 159, 1997
  • 12. A.J. Janavicius, S. Turskiene, Acta Phys. Pol. A, 108, 979, 2005
  • 13. J.L. Hastings, S.K. Estreicher, P.A. Fedders, Phys. Rev. B, 56, 10215, 1997
Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv110n407kz
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