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  • 1
    Electronic Resource
    Electronic Resource
    Thermoelectric power in porous silicon (1998)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 83 (1998), S. 5855-5857 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Thermoelectric power measurements have been made on macroporous (pore width 〉500 Å°) porous silicon samples prepared by an anodic dissolution technique. The sign of thermopower is found to be negative indicating that conduction takes place due to electrons in the conduction band. The conduction mechanism is found to be due to variable range hopping near the Fermi level for temperatures below 150 K. At higher temperatures the conduction is due to the tunneling of carriers in the localized states in the band edges. It was concluded that these localized states are formed because the nanocrystallites in porous silicon are randomly distributed in size and orientation leading to fluctuations in band gap. This results in the constitution of a disordered system on a macroscopic scale. © 1998 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.367444
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  • 2
    Electronic Resource
    Electronic Resource
    Scanning tunneling microscope for cluster studies (1994)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 65 (1994), S. 400-403 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: Details of the construction of a scanning tunneling microscope (STM) are given in this article. This STM enables one to change the atmosphere around the sample easily from air to inert gases or to vacuum. The STM is compatible with a chamber in which metallic clusters are prepared.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1145145
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    Paper (German National Licenses)
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