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  • 2000-2004  (2)
  • 1985-1989  (2)
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  • 1
    Electronic Resource
    Electronic Resource
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 76 (2000), S. 124-125 
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Many fabricated Schottky diodes exhibit significant deviations from the theoretically calculated current–voltage (I–V) characteristics of ideal Schottky diodes. Attempts have been made to account for this deviation using interface states or surface state densities. Previous models have used the interfacial layer model to analyze the nonideal I–V characteristics of a GaAs Schottky barrier. We show here how nonideal behavior can be explained by considering surface leakage currents and material resistance. The standard figure of merit of Schottky diodes is the ideality factor, which can be obtained from measurements of δV/δ ln(I). By taking into account device resistance and shunt leakage paths with physically appropriate parameters, a relationship between δV/δ ln(I) and voltage can be established, which yields a better understanding of transport across the interface(s) of real Schottky diodes. © 2000 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Environmental science & technology 22 (1988), S. 1248-1255 
    ISSN: 1520-5851
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 72 (2001), S. 3834-3841 
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: We present design and construction details for a novel high field, small bore permanent hexapole magnet. The design is intended for focusing atomic beams of 3He at thermal energies. The magnet uses an optimized polepiece design which includes vacuum gaps to enable its use with high intensity atomic and molecular beams. The 0.3 m long, 1 mm internal radius magnet achieves a polepiece tip field of 1.1 T using NdFeB permanent magnets and Permendur 49 polepieces. The polepiece shanks are designed to saturate so that the hexapole properties are determined predominantly by the shape of the polepiece tip. The performance of the hexapole assembly is demonstrated with an 8 meV 3He beam in the beam source of the Cambridge spin echo spectrometer and the measured focused beam results show excellent agreement with theoretical predictions and negligible beam attenuation. © 2001 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Phytopathology 26 (1988), S. 245-263 
    ISSN: 0066-4286
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Biology
    Type of Medium: Electronic Resource
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