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The characteristics of the Coulomb gap in the density of states of germanium doped irradiation defects
Author(s) -
ElHakim S. A.
Publication year - 2004
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.200302013
Subject(s) - germanium , condensed matter physics , coulomb , doping , dielectric , fermi level , percolation theory , density of states , conductivity , percolation (cognitive psychology) , variable range hopping , radius , materials science , range (aeronautics) , electrical resistivity and conductivity , irradiation , percolation threshold , chemistry , physics , silicon , nuclear physics , quantum mechanics , electron , optoelectronics , computer security , composite material , neuroscience , computer science , biology
This work deals with the determination of the characteristics of the Coulomb gap (CG) in the density of states (DOS) in the vicinity of the Fermi level, from the analysis of the temperature dependence of dc conductivity in the temperature range (1.5 K–300 K) in germanium, disordered by large fluences of fast reactor neutrons. From application, the percolation theory of conductivity and the variable range hopping (VRH) under the effect of the Coulomb interaction of localized carriers, the localization radius is found to be 49.2 Å. The dielectric constants of the samples are determined. (© 2004 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)