摘要:

AbstractThe non‐Ohmic hopping behaviour on random lattices is studied by solving the percolation problem by computer simulation. The dimensional “invariants”Bc(average number of open bonds per site) andvc(critical volume fraction) are shown to be not suitable for an investigation of this problem, because they are field dependent. Furthermore the field dependence of the “returns” in the percolation paths and the decrease of the conductivity at sufficiently low fields ar

ISSN:0370-1972    

DOI:10.1002/pssb.2221210144

出版商:WILEY‐VCH Verlag    

年代:1984

数据来源: WILEY

摘要:

AbstractThe effect of the space charge at the contacts on the low‐frequency dispersion of the electrical properties of ice is theoretically investigated. It is shown that in general case there are four characteristic frequencies related to four Maxwell relaxation times of four partial conductances of defects. The real part of the dielectric permittivity has dispersion “steps” at characteristic frequencies. An analysis of the step heights and their position in the dielectric spectrum gives valuable information on concentrations and mobilities of charge carriers i

ISSN:0370-1972    

DOI:10.1002/pssb.2221210145

出版商:WILEY‐VCH Verlag    

年代:1984

数据来源: WILEY

摘要:

AbstractPhotonic quantum 1/ƒ noise is identified in Au metal films below the Debye temperature. The low values of the Hooge parameter predicted by Handel's theory (i.e., αtrue≈ 10−6to 10−8) are arrived at by realizing that only the fraction ≈ 3kT/2ΔϵFof the total number of carriers is available for scattering at a given

ISSN:0370-1972    

DOI:10.1002/pssb.2221210146

出版商:WILEY‐VCH Verlag    

年代:1984

数据来源: WILEY

摘要:

AbstractThe phenomenon of electronic transport of ultrasonic fields corresponding to a circularly polarized wave is observed and studied in a single crystal of superpure indium under propagation of transverse ultrasonic radio‐wave pulses along tetragonal crystallographic axis under Doppler‐shifted acoustic cyclotron resonance conditions in a longitudinal magnetic field. The most effective transport is proved to be in the range of sufficient deformation interaction of conduction electrons with the ultrasonic wave. A Gaussian curvature of the resonant band of electrons is determi

ISSN:0370-1972    

DOI:10.1002/pssb.2221210147

出版商:WILEY‐VCH Verlag    

年代:1984

数据来源: WILEY

ISSN:0370-1972    

DOI:10.1002/pssb.2221210101

出版商:WILEY‐VCH Verlag    

年代:1984

数据来源: WILEY