Journal
JOURNAL OF SEMICONDUCTORS
Volume 36, Issue 12, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1674-4926/36/12/122001
Keywords
n-CdSe samples; low temperature; variable range hopping; density of state
Categories
Ask authors/readers for more resources
We reanalyzed experimental data already published in Friedman J R, Zhang Y, Dai P, et al. Phys Rev B, 1996, 53(15): 9528. Variable range hopping (VRH) conduction in the insulating three-dimensional n-CdSe samples has been studied over the entire temperature range from 0.03 to 1 K. In the absence of a magnetic field, the low temperature conductivity sigma of the three samples (A, B and C) obeys the Mott VRH conduction with an appropriate temperature dependence in the prefactor (sigma = sigma(0) exp [- (T-0/T)](p) with p approximate to 0.25). This behavior can be explained by a VRH model where the transport occurs by hopping between localized states in the vicinity of the Fermi level, EF, without creation of the Coulomb gap (CG). On the contrary, no Efros-Shklovskii VRH is observed, suggesting that the density is constant in the vicinity of the EF.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available