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Pis'ma v Zh. Èksper. Teoret. Fiz., 2001, Volume 73, Issue 1, Pages 50–53 (Mi jetpl4289)  

CONDENSED MATTER

Magnetic field effects on the nonohmic impurity conduction of uncompensated crystalline silicon

A. P. Mel'nikova, Yu. A. Gurvicha, L. N. Shestakovb, E. M. Gershenzona

a Moscow State Pedagogical University
b M. V. Lomonosov Pomor State University

Abstract: The impurity conduction of a series of crystalline silicon samples with the concentration of major impurity $N\approx3\times10^{16}$cm$^{-3}$ and with a varied, but very small, compensation K was measured as a function of the electric field $E$ in various magnetic fields $H-\sigma(H, E)$. It was found that, at $K<10^{-3}$ and in moderate $E$, where these samples are characterized by a negative nonohmicity ($d\sigma(0, E)/dE<0$), the ratio $\sigma(H, E)/\sigma(0, E)>1$ (negative magnetoresistance). With increasing $E$, these inequalities are simultaneously reversed (positive nonohmicity and positive magnetoresistance). It is suggested that both negative and positive nonohmicities are due to electron transitions in electric fields from impurity ground states to states in the Mott–Hubbard gap.

Full text: PDF file (290 kB)

English version:
Journal of Experimental and Theoretical Physics Letters, 2001, 73:1, 44–47

Document Type: Article
PACS: 72.20.-i, 72.80.-r
Received: 06.12.2000
Revised: 18.12.2000

Citation: A. P. Mel'nikov, Yu. A. Gurvich, L. N. Shestakov, E. M. Gershenzon, “Magnetic field effects on the nonohmic impurity conduction of uncompensated crystalline silicon”, Pis'ma v Zh. Èksper. Teoret. Fiz., 73:1 (2001), 50–53; JETP Letters, 73:1 (2001), 44–47

Citation in format AMSBIB
\Bibitem{MelGurShe01}
\by A.~P.~Mel'nikov, Yu.~A.~Gurvich, L.~N.~Shestakov, E.~M.~Gershenzon
\paper Magnetic field effects on the nonohmic impurity conduction of uncompensated crystalline silicon
\jour Pis'ma v Zh. \`Eksper. Teoret. Fiz.
\yr 2001
\vol 73
\issue 1
\pages 50--53
\mathnet{http://mi.mathnet.ru/jetpl4289}
\transl
\jour JETP Letters
\yr 2001
\vol 73
\issue 1
\pages 44--47
\crossref{https://doi.org/10.1134/1.1355405}
\scopus{http://www.scopus.com/record/display.url?origin=inward&eid=2-s2.0-0013427587}


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