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  • Electronic Resource  (3)
  • 71.30.+h  (2)
  • Analytical Chemistry and Spectroscopy  (1)
  • 1
    Electronic Resource
    Electronic Resource
    The conductivity of the spin-polarized two-dimensional electron gas: Exchange/correlation and strong disorder effects (2000)
    Springer
    JETP letters 72 (2000), S. 274-277 
    Details
    ISSN: 1090-6487
    Keywords: 73.50.−h ; 71.30.+h
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The conductivity of a spin-polarized two-dimensional electron gas is calculated and compared with the conductivity of the unpolarized electron gas. Disorder effects are considered within the self-consistent current relaxation theory, which gives rise to a crossover point from metallic to insulating behavior. Many-body effects due to exchange and correlation are taken into account and are described by a local-field correction. Our calculations are in good agreement with recent experimental results on the magnetoresistance of silicon inversion layers.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1134/1.1324027
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Magnetoresistance of a two-dimensional electron gas in a parallel magnetic field (2000)
    Springer
    JETP letters 71 (2000), S. 27-30 
    Details
    ISSN: 1090-6487
    Keywords: 73.50.Jt ; 71.30.+h
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The conductivity of a two-dimensional electron gas in a parallel magnetic field is calculated. We take into account the magnetic-field-induced spin-splitting, which changes the density of states, the Fermi momentum, and the screening behavior of the electron gas. For impurity scattering, we predict a positive magnetoresistance for low electron density and a negative magnetoresistance for high electron density. The theory is in qualitative agreement with recent experimental results found for Si inversion layers and Si quantum wells.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1134/1.568270
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Analysis of cyclopentafused isomers of benz(a)anthracene in wood smoke (1987)
    Chichester : Wiley-Blackwell
    Biological Mass Spectrometry 14 (1987), S. 369-374 
    Details
    ISSN: 0887-6134
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: A previously-unidentified peak occurring in chromatograms of the polycyclic aromatic hydrocarbon fraction from wood smoke particulate extracts analysed by capillary gas chromatography on a DB-5 column was found to correspond in retention index and molecular mass either to benzo(a)fluoranthene or to benzo(1)aceanthrylene, one of a series of four novel and highly mutagenic cyclopentafused isomers of benz(a)anthracene. Detailed sub-fractionation, and re-analysis on a liquid crystal capillary column, indicated that the identity of this peak was most likely to be benzo(a)fluoranthene, a compound not previously reported in woodsmoke.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bms.1200140804
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    Paper (German National Licenses)
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